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MBN4 NaviCust01

The Navi Customizer in Mega Man Battle Network 4: Red Sun.

The Navi Customizer (ナビカスタマイザー Nabikasutamaizā), NaviCust for short, is a NetNavi customization program released by SciLab in Mega Man Battle Network 3. Yuichiro Hikari is the chief developer of the program. It was made for the PET models Plug-in PET, Advanced PET, Progress PET, and Link PET_EX.

In Mega Man Battle Network 3, if Lan uses a Navi Customizer program that the current Style did not support and rebooted MegaMan.EXE, he'd get an error, MegaMan would not be able to boot up, unless remedied with an Extra Code. However, in the fourth, fifth, and sixth games, the errors disappeared due to MegaMan overloading to destroy Alpha. In doing so, he nearly killed himself, but when Lan gives Yuichiro Tadashi Hikari's letter, MegaMan is recovered from Alpha's body. However, his letter removed the Style Change. So, Double Soul was made as a suitable replacement.

Rules

The Navi Customizer consists of a set area, and a Command Line running through the center of the area. Through all of its incarnations, it has four basic rules:

  • Solid programs must be placed with at least one block on the Command Line. If this rule is broken, not only will bugs occur, but the program will not take effect. Even with Bugstop enabled, this rule must still be applied for the program to work.
  • Textured programs must be placed off the Command Line.
  • No two programs of the same color can touch each other.
  • All equipped programs must match MegaMan's compatible colours (white, yellow, pink, and an additional one depending on his Style)
    • From BN4 onwards, this rule changes to: No more than four different colors may be placed in the area.

Breaking any of these rules will result in bugs occurring in MegaMan, and each bug has different effects depending on the part(s) that violate the rules. All bugs can be omitted by the NaviCust program BugStop, which allows most rules to be broken; solid programs still need to have at least one block on the command line to take effect.

Each NaviCust piece is a combination of blocks, and is either completely solid or completely textured. If the player possesses the Spin item of a piece's color, they will be able to rotate all pieces of the same color with the L or R buttons - a valuable asset when it comes to maximizing the use of the NaviCust's limited space.

The NaviCust is always at a tiny 4x4 area the moment the player receives it. To expand it, the player must find "ExpMemory" items, which will boost the space to a 5x4, and eventually a 5x5 area, allowing for maximal programs to be installed.

The NaviCust is always introduced with the Undershirt, Attack+1, and Speed+1 programs.

In Mega Man Battle Network 6, parts can now be placed off the Navi Customizer's main area, on the condition that at least one block of the part is left in the main area. Also, regardless of whether or not a block is on the main memory map, no blocks can be placed on the outside corners of the map (i.e. off-map areas only extend off the main map and do not allow corners outside of the map). This has resulted in the total space available being almost doubled. The Command Line is also capable of reading "hidden" parts, as long as they're aligned with the main Command Line. However, placing parts off the main area will, once again, result in bugs.

Codes

Extra Codes & Error Codes

ExtraCode

The Extra Code interface.

In Mega Man Battle Network 3, different Styles are compatible with different NaviCust program colors. In addition to MegaMan's innate compatibility with yellow, pink, and white programs, a Style is compatible with an additional program color:

  • Guts/Shadow: Red
  • Shield/Custom: Blue
  • Team/Ground: Green
  • Bug: Grey

If any of the programs to be installed are of an incompatible color, the NaviCust will bring up an error, and MegaMan will not be able to boot up, unless the player can remedy this using an Error Code with the ModTools accessory. The Giga Folder and Hub Batch programs are purple and orange respectively, forbidding the player to use them in any Style without their proper corresponding Error Code.

To use the Error Code, press Select in the NaviCust when the system reports an error or says "OK!". The screen will bring up a series of alphabets and numbers. By inputting the correct sequence, Lan can remedy the error and allow MegaMan to boot up. If no incompatibility error is present, the Extra Code can be inputted to give MegaMan extra abilities. Be warned that some abilities have side effects.

List of Extra Codes

Extra Code Effect Glitch(es)
JIEU1AWT HP +100 No glitch
U2IEOSKW HP +150 No glitch
ASK3IETN HP +200 No glitch
SIE1TMSD HP +250 No glitch
SEIUT1NG HP +300 No glitch
GJHURIE2 HP +350 No glitch
AWE3ETSW HP +400 Custom screen capacity -1
3MZNBXH1 HP +450 Custom screen capacity -1
2YTIWOAM HP +500 Custom screen capacity -1
O3IUTNWQ HP +550 Custom screen capacity -1
ZMJ1IGIE HP +600 Custom screen capacity -2
SRUEIT3A HP +650 Custom screen capacity -2
DMGEIO3W HP +800 Stepping off a panel converts it into a Poison Panel
SM2UIROA HP +900 Stepping off a panel converts it into a Poison Panel
CNJDU2EM HP +1000 Stepping off a panel converts it into a Poison Panel
KTEIUE2D Super Armor No glitch
SKDSHUEO Break Charge Custom screen capacity -1
SI1IEMGO Break Buster Custom screen capacity -2
JDKGJ1U2 Mega Folder 1 No glitch
3DIVNEIQ Mega Folder 2 Custom screen capacity -1
URY33RRO Mega Folder 3 Stepping off a panel converts it into a Poison Panel
FFIM1OWE Mega Folder 4 Stepping off a panel converts it into a Poison Panel
SKFBM3UW Mega Folder 5 Stepping off a panel converts it into a Poison Panel
ZBKDEU1W Block No glitch
EIR3BM3I Shield No glitch
SK13EO1M Reflect Custom screen capacity -1
GKHU1KHI Shadow Shoes No glitch
PEOTIR2G Float Shoes No glitch
L3KJGUEO Anti-Damage Custom screen capacity -1
ZN3UDOIQ Air Shoes Custom screen capacity -1
SJH1UEKA Humor No glitch
UIEU2NGO Sneak Run No glitch
SKJGURN2 Under Shirt No glitch
XBCJF2RI Fast Gauge Custom screen capacity -2
2BKD1UEW Slow Gauge No glitch

List of Error Codes

Note that after successfully inputting an Error Code, the game will remember the same code every subsequent time that error is encountered, and will automatically input the code when the Extra Code interface is brought up during the error report.

Error Code Program Obtained From Error Number
GYU2OPZQ Super Armor Guts Style A1
3GKQ2RSQ Break Buster A2
LO13ZXME Break Charge A3
JHGIUTOP Set Green Ground Style B1
ALSK3W2R Set Ice B2
Y2UOMNCB Set Magma B3
1LSKUTOB Set Sand B4
BM2KWIRA Set Metal B5
UTI3OMDH Set Holy Ground Style B6
X2CD3KDA Custom 1 Custom Style C1
UTIXM1LA Custom 2 C2
WS1FS1AQ Dark License Bug Style D2C
OI1UWMAN D2G
P3TOSIIS D2S
P2I3MSJL Mega Folder 1 Team Style E1
UTIR1SO2 Mega Folder 2 E2
QSAO3C3L Block Shield Style F1
NC1FKSA2 Shield F2
ITA2CRWQ Reflect F3
TIS1LAEJ Giga Folder 1 G2C
CVVDS2WR G2G
TUIEO23T G2S
A3DJMNB1 Shadow Shoes Shadow Style H1
UTIW2SMF Float Shoes H2
SK3LROT1 Anti-Damage H3
TU1AW2LL Hub Batch S2C
AX1RTDS3 S2G
F2AAFETG S2S

Compression Codes

Programs can be reduced by a few squares by inputting a Compression Code. Doing so will shrink it, allowing for more programs to be inserted. Each program has its own unique compression code in each game. In Mega Man Battle Network 3, to input the compression code, highlight the program that's going to be compressed, hold Select, and input the commands (by pressing a sequence of buttons on the controller). In Mega Man Battle Network 5 and 6, highlight the program, hold Right, and input the commands. Mega Man Battle Network 4 does not utilize Compression Codes as the Programs come already pre-compressed. Note that if inputting the incorrect button during in a sequence, it will play an "incorrect" sound for that specific button, allowing trial and error knowing which button to press is the correct one (this doesn't happen on MMBN6, as there no indication).

Program BN3 Code BN5 Code BN6 Code
Undershirt ← ↑ B L ← ↑ ARBBRLRALA RRALLRAABB
Sneak Run R L B ↓ ↓ ↓ RLLALLBABB BBBABBAARB
Oil Body ↑ → A A R ↑ LBRARLABLB LRABARBBLR
Fish L R ↓ ↑ ← → BABALRARAA ARAABARRBA
Battery → R → R L ← AABRABRLLR BRBBBBBARR
Jungle A R ← B B A LRLABLBBLA ALARBRARLB
Collect B ↓ → R → → BRALARBAAB ALABBAAABA
Super Armor ↑ → ↑ R ↑ ↓ RABRALLRBA ABLLAALRBA
Break Charge B A ← L ↑ B N/A N/A
Break Buster R A B ↓ L L N/A N/A
Air Shoes ↑ B B ↓ A R BLBABLBBAA ARBABRRBAL
Float Shoes ← ↓ ← ↓ ← L ALLBRLAAAL RALABLBBRB
Shadow Shoes ↑ ← → L ↑ R N/A N/A
First Barrier N/A RLABBARALR BBARABLARR
Block ↓ B ↑ ↓ A ← N/A N/A
Shield ← → ↓ R ↓ R ABARALRBBA RBBBAAABRL
Reflect B ↑ A ← ← B LLRBLLAALB LAABRRLRLR
Anti-Damage L ← R A → ↓ RBBARBRARB BLALBRALBA
Custom 1 → → → ↑ ← B AARLBABALB LBBRBAALRR
Custom 2 A ↓ ↑ ↓ R ↓ BARLLRALBR RALLAABRBA
Mega Folder 1 → R ↓ R L ← BBABBRRLAR ARLALALLAB
Mega Folder 2 A R ↓ ↓ → ← LABBLBAALL LALRBLRLRA
Giga Folder 1 L ↓ A ↓ R B ↑ RRLBLLARBL BLBRLLLABA
Bug Stop B ↓ ↑ B ↓ B BABLABRLRB AAABRLBAAL

List of Navi Customizer Programs

Navi Customizer Programs are the program blocks for the Navi Customizer that allow a NetOp to upgrade and personalize their NetNavi with new abilities.

Common Solid Programs

These programs must be placed on the Command Line to have their effects applied. Failure to do so would not only prevent them from working, but will also create bugs in programming. All the following programs can be found in all games from Mega Man Battle Network 3 to 6.

Name Effects Known Glitches
Under Shirt Prevents Megaman from getting deleted if he takes an amount of damage greater than or equal to his current HP by restoring his HP to 1.
Super Armor MegaMan cannot flinch. This prevents him from being interrupted while attacking, and prevents loss of Busting rank due to getting hit. Hinders the player's ability to move MegaMan.
Air Shoes MegaMan can stand on holes. Panels which MegaMan steps off become cracked, destroyed, or Poison panels.
Float Shoes MegaMan does not suffer from ill effects of panels. This means he does not slide on Ice panels, does not get burnt by Lava panels, etc. He still takes double damage from Fire and Elec attacks on Grass and Ice panels respectively though, and in Battle Network 3 he still takes damage from standing on Poison panels, and creates holes when he moves over cracked panels. Panels which MegaMan steps off become cracked, destroyed, or Poison panels.
Anti-damage By pushing B + ←, MegaMan enters a temporary state. Any damage done in this state is negated, and a throwing star will be thrown at the nearest enemy, damaging it.
Custom 1 Increases initial Custom capacity by 1. HP depletion while accessing the Custom Window.
Custom 2 Increases initial Custom capacity by 2. HP depletion while accessing the Custom Window.
Shield By pushing B + ←, MegaMan pulls up a shield that can block non-breaking attacks. Hinders the player's ability to move MegaMan.
Reflect By pushing B + ←, MegaMan pulls up a shield that can block non-breaking attacks and damage all enemies in the same row as him Hinders the player's ability to move MegaMan.
Mega Folder 1 Increases Mega Chip capacity in the folder by 1. HP depletion while accessing the Custom Window.
Mega Folder 2 Increases Mega Chip capacity in the folder by 2. HP depletion while accessing the Custom Window.
Bug Stop Prevents glitches from occurring, allowing the player to break the rules of the Navi Customizer with no drawback. Cannot be glitched.
Sneak Run This gives a permanent effect of the Subchip of the same name, allowing MegaMan to go about with reduced chance of randomly encountering weak viruses. Raises random encounter rate.
Oil Body Raises encounter rate of Fire-attributed enemies. Reduces encounter rate of Fire-attributed enemies.
Water Body Raises encounter rate of Water-attributed enemies. Reduces encounter rate of Water-attributed enemies.
Battery Raises encounter rate of Elec-attributed enemies. Reduces encounter rate of Elec-attributed enemies.
Jungle Raises encounter rate of Wood-attributed enemies. Reduces encounter rate of Wood-attributed enemies.
Collect Forces the rewards from battle to become a battle chip that can be obtained from the fought enemies. No data is acquired if they do not drop battle chips. Forces rewards to become Zenny instead.
Humor Pressing L in the real world will have MegaMan tell a (bad) joke. Causes MegaMan's Emotion Window to flicker between available states.
Rush During multiplayer matches, if the opponent uses Invis or Mole chips, the chip is negated and they are paralyzed.
Beat During multiplayer matches, once per turn, if the opponent uses a Mega or Giga class chip, the chip is stolen and you use it instead.
Tango During multiplayer matches, when MegaMan's HP falls to 25% of max HP or lower, it heals him and may provide a barrier.
Giga Folder 1 Allows the player to add 1 more Giga Chip into their folder. Panels which MegaMan steps off are turned into Poison panels. Cannot be fixed without BugStop.

Common Textured Programs

These programs have four shaded squares on each tile. They must be placed off the Command Line. Failure to do so will cause bugs. The following programs can be found in Battle Network 3 to 6.

Name Effects Known Glitches
Attack +1 Buster damage +1 Buster may fail to fire. (Guard and Misfire)
Speed +1 Buster fire rate +1 Buster may fail to fire. (Guard and Misfire)
Charge +1 Buster charge speed +1 Buster may fail to fire. (Guard and Misfire)
HP +50 Max HP +50 HP bug during battle.
HP +100 Max HP +100 HP bug during battle.
HP +200 Max HP +200 HP bug during battle.
HP +300 Max HP +300 HP bug during battle.
HP +400 Max HP +400 HP bug during battle.
HP +500 Max HP +500 HP bug during battle.

Exclusive Programs

The following programs appear only in certain games.

Name Game(s) Type Effects
Break Charge 3 Solid Charged Buster shots can break guards.
Break Buster 3 Solid Normal and charged Buster shots can break guards.
Shadow Shoes 3 Solid MegaMan can move over cracked panels without breaking them. This is later integrated into the Float Shoes program.
Set Metal 3 Solid The battle starts with all panels as Metal panels.
Set Sand 3 Solid The battle starts with all panels as Sand panels.
Set Green 3 Solid The battle starts with all panels as Grass panels.
Set Ice 3 Solid The battle starts with all panels as Ice panels.
Set Magma 3 Solid The battle starts with all panels as Lava panels.
Set Holy 3 Solid The battle starts with all panels on MegaMan's side as Holy panels.
Block 3 Solid Pushing B + ← will have MegaMan temporarily enter a state where any damage suffered is halved.
Fast Gauge 3 Solid The Custom Gauge fills up at double speed.
Press 3 Solid This compresses MegaMan, allowing him to walk on thin beams located all across the net.
Energy Change 3 Solid This allows MegaMan to use Aqua chips to put out FlameMan.EXE's fires or use Fire chips to burn down PlantMan.EXE's vines.
Black Mind 3 Solid This gives MegaMan an evil aura, allowing him to communicate with certain Heel Navis.
Alpha 3 Solid This allows the player to spot tiles on the floor where Alpha is hiding, and avoid them.
Buster MAX 3 Solid Increases all Buster stats to 5. Charge shot level is unchanged. Causes a bug where all loaded chips in battle will be automatically used at the first possible opportunity.
Dark License 3, 4 Solid

In Battle Network 3, MegaMan can use certain Giga chips without needing the "Hole" chip. In Battle Network 4, it takes up the entire NaviCust, but allows MegaMan to use Dark chips with no drawbacks.

Infos for the NCB in 4

Hub Batch

3, 4

Solid Gives a number of effects, including Break Buster, Super Armor, Air Shoes, Float Shoes, Custom 1, Mega Folder 1, Shield, and Under Shirt. Causes a bug that halves MegaMan's max HP.
First Barrier 4, 5, 6 Solid MegaMan starts the battle with a 10 HP Barrier.
Buster Pack 4, 5, 6 Solid +3 to all Buster stats.
Body Pack 4, 5, 6 Solid Gives Air Shoes, Float Shoes, Super Armor and Under Shirt.
Soul Cleanser 4, 5 Solid Increases the rate at which MegaMan recovers from "Dark MegaMan" state by battling without using Dark Chips.
Millions 5, 6 Solid All Green Mystery data becomes Zenny.
Auto Recover 5, 6 Solid MegaMan regenerates some HP at the end of each battle.
Auto Run 5 Solid MegaMan can run without needing to push the B button. This actually reduces the encounter rate slightly.
Chivalry 5 Solid Pushing L in the real world will allow MegaMan to give some masculine comments.
Mega Virus 5 Solid Allows MegaMan to encounter Tier 2 Viruses without needing to open the portal to Nebula Area 1.
Giga Virus 5 Solid Allows MegaMan to encounter Tier 3 Viruses without needing to open the portal to Nebula Area 4.
Support 5 (DS) Solid Allows MegaMan to use his Support ability while not in battle via the Party Battle System.
Change +1 5 (DS) Solid Allows the player to perform one additional Navi Change with the Party Battle System.
Change +2 5 (DS) Solid Allows the player to perform two additional Navi Changes with the Party Battle System.
Chip Shuffle 6 Solid Grants access to the "Search Shuffle" ability once per turn in the Custom Screen.
Number Open 6 Solid MegaMan starts with 10 chips in the Custom Screen.
Poem 6 Solid Pushing L in the real world will allow MegaMan to recite a poem.
Slip Runner 6 Solid MegaMan can run without needing to push the B button. Pushing B and a direction will cause him to continuously slide along the map until he hits a wall. No viruses will be encountered until he stops sliding, and the encounter rate is reduced while running.
Folder Pack 1 6 Solid Grants Custom 1 and Mega Folder 1.
Folder Pack 2 6 Solid Grants Custom 2 and Mega Folder 2.
Weapon LV +1 3 Textured Upgrades MegaMan's Style Change charge shot level by 1. Does not work with Normal Style. Caps at 3.
Regular +5 3 Textured Increases memory for Regular Chip by 5 MB.
Attack MAX 4, 5, 6 Textured Increases Buster attack to 5.
Speed MAX 4, 5, 6 Textured Increases Buster firing speed to 5.
Charge MAX 4, 5, 6 Textured Increases Buster charge speed to 5.
Soul Time +1 5 Textured Increases duration of Soul Unisons. Does not extend duration of Chaos Unisons.

Gallery

Trivia

No1CurryMenu

Compression Code for the program Collect in the anime.

  • Some Extra Codes and Compression Codes from Mega Man Battle Network 3 appear hidden in the anime MegaMan NT Warrior.
    • The Extra Code used in the anime to power up MegaMan's Aqua Custom Style is one of the few that are explicitly shown rather than minute details in the background. The code in question is one that gives 200 additional HP without any drawbacks.


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