They mostly appear as enemies, but there are also bosses such as the giant Met in the Wily Castle in Mega Man 4, Metall Daddy. In Mr. X's Castle in Mega Man 6 there is a Met boss operating a tank, named Metonger Z. In Mega Man ZX, there is a giant Met sub-boss, named Powmettaur.
Mets in the Mega Man series
Mets are recurring enemies in the original Mega Man series, appearing in near every game with varying traits, including some appearances as sub-bosses and bosses. The most common type hides under its helmet and fires three projectiles when approached.
Mets in the Mega Man X series
Mets appear in the Mega Man X series with many incarnations, each with their own unique trait. Generally though, Mets behave and look almost exactly like the ones from the original series, albeit there are specialized types of Mets.
Mets in the Mega Man Zero series
The Mets appear in all four games from the Mega Man Zero series, but they don't have any new attribute, being called ancient Mechaniloids. In the first three games from the series, they don't appear as normal enemies. They only appear if Hacker Cyber-elves like Metoras are used to turn almost all enemies of the stage into Mets. These Mets seem to be all from Mega Man 7, the enemies becoming Metall RW (land enemies), Heli Metall RW (aerial enemies) and Swim Metall RW (aquatic enemies).
In Mega Man Zero 4, there are only standard Mettaurs (without RW in its name) in Fenri Lunaedge's stage and in Popla Cocapetri's stage. It's possible to use their helmets as a shield by using the Zero Knuckle.
Mets in the Mega Man ZX series
Mets appears as enemies in the Mega Man ZX series, and a giant Met as a sub-boss. Area H is an abandoned Met-themed amusement park that contains several Mets in the area, including Met balloons, a genie Met and a Met doll in the crane game. The Cyber-elf Met from the Mega Man Zero series also appears in the crane game and in Prairie's room in the Guardian HQ.
PattrolaurPattrolaur is an overfactored patroller Mettaur designed and developed by Slither Inc.. Instead of shooting bullets from its mouth, it uses a baton to rush at foe. It will act docile when Vent/Aile is in his/her human form. They appear in Area B, Area C and Area D
RemettaurRemettaur, known as Metall RE in Japan, is a Met similar to the Metall Mommy. Produced by a factory on Slither Inc.'s request, when a Remettaur is destroyed, mini Mettaurs jump out. The mini Mettaurs appear to be short-fused and explode shortly after.
PowmettaurPowmettaur, known as Metall Powered (メットールパワード) in Japan, is the sub-boss from Area H in Mega Man ZX. It is a giant Met, similar to the Metall Daddy from Mega Man 4, that was originally designed as an amusement park mascot.
Powmettaur attacks by dropping miniature Mets from the top of its head, spitting balloons with enemies in them, and hovering like a UFO while inside its helmet. It can spit three kinds of balloons that explode into a different enemy depending on what the color is. There is blue for Eyeballoons, green for Mechadragons, and pink for Springers
VMettaurVMettaur, known as Metall V in Japan, is the latest model Mettaur from Mega Man ZX Advent that appears in the Quarry. It spits mini Mettaur bombs. Its cute looks earned it nominations to be mascot for amusement parks, is very similar to Metall Mommy.
Mets in the Mega Man Battle Network series
In the Mega Man Battle Network series, Mets are computer viruses that attack with pickets and shockwaves.
There are three basic Mettaur types that appears in all games: The first Mettaur found in the games has a yellow helmet and doesn't hide under it. The second Mettaur, Mettaur2, has a red helmet and hides under the helmet while another Mettaur is attacking. Mettaur3 is blue and acts like Mettaur2, only having higher stats.
In Mega Man Battle Network 4, there is a Mettaur Village.
Mets in the Mega Man Star Force series
In the Mega Man Star Force series there are Mets called "Mettenna". Its name is probably a combination of the words Met and antenna, this may be due to that now it has an antenna. Their appearance and movements are similar to the Mettaurs from the Mega Man Battle Network series. The only difference is that their helmets have a sharp point on the tip which gives off tiny ring-shaped radio waves.
Mets in other games
Besides Mega Man games, Mets appeared as enemies in Super Smash Bros. for Nintendo 3DS, Project X Zone, Project X Zone 2, and in events from Zombie Cafe and Dragon Poker. Mets appeared as event units in Line Rangers and Yuusha no Kuse ni Konamaiki da DASH!. They had cameo appearances in Capcom Quiz: Hatena? no Daibouken, Marvel vs. Capcom: Clash of Super Heroes, Bionic Commando: Rearmed, Super Smash Bros. Ultimate, and Castle & Dragon.
Mega Man (Ruby-Spears)
A single Met appears in the first episode, "The Beginning." This particular Met is called Doc. He talks by making funny sounds, yet Dr. Light seems to understand him. Doc goes out into the field with Roll and helps Dr. Light in the lab. He seems to have been a prototype or an alternate version of Eddie, as many items can be produced from his hardhat, even an entire stretcher for Mega Man. In a flashback in the same episode, a Metall-like construction robot can be seen in some blueprints on Dr. Light's table.
Standard Mets and Metall K-1000s are some of the robots that appear briefly attacking an amusement park in the episode "Appearance in Japan".
In the beginning of the crossover, Wily was asking Ra Moon to create a Met with a rice-cooker function, which is later used by him and Dr. Eggman. Several Mets appear operating under Wily and Eggman during the crossover, and in Sonic the Hedgehog Issue 250, the two make a bet to see which of their minions (a Met and a Moto Bug) can cause more damage to Dr. Light. However, the two get into a fight and destroy each other. Dr. Light uses their remains to create a communicator and ask for help, but its signal is very weak, being only detected by Eggman's robots, Orbot reporting it to him.
Also, several Chao from Eggman's world took on Met-like qualities. It is unknown if they are all Chao or if there are robots among them.
Several Met varieties appear in the Rockman manga series by Shigeto Ikehara. As they are common enemies, most of their appearances are brief, their most prominent appearance being inside New Metropolis in the Rockman 6 manga.
Enemies similar to the Mets.
|Mega Man X series|
|Mega Man Zero series|
| Zero • Ciel • Mega Man X • Resistance • Dr. Weil • Omega • Elpizo • Dark Elf • Caravan • Neige • Craft |
Copy X • Sage Harpuia • Fighting Fefnir • Fairy Leviathan • Hidden Phantom • Eight Gentle Judges • Einherjar Eight Warriors
|Mega Man Zero • 2 • 3 • 4 • Collection • Legacy Collection|
|Mega Man Zero • 2 • 3 • 4|
| Zero's weaponry • Zero Knuckle • Chips • Item Box • Cyber-elf (List) |
Armed Phenomenon • Golem • Locations (Neo Arcadia • Resistance Base • Area Zero • Ragnarok) • Pantheon (List) • Variant
Mega Man Zero Official Complete Works • RTRZ-Telos Drama Track Translations • Remastered Tracks Rockman Zero
Rockman Zero (manga) • Zero 3 Database • Zero 4 Database • Vile's Incident: Eden dome, its sin and rebirth
|Mega Man ZX series|
| Vent • Aile • Ashe • Grey • Girouette • Prairie • Guardians • Hunters • Raiders|
Sage Trinity • Aeolus • Atlas • Thetis • Siarnaq • Serpent • Prometheus • Pandora • Pseudoroids
|Mega Man ZX • Mega Man ZX Advent • Legacy Collection|
|ZX (Vent's story) • ZX (Aile's story) • ZXA (Grey's story) • ZXA (Ashe's story)|
| Biometal • Game of Destiny • Humanoid • Locations • Mega Man |
Mega Man ZX (manga) • ZX Tunes • ZXA Tunes • Rockman ZX Soundsketch - ZX GIGAMIX
|Mega Man Battle Network series|
| Lan Hikari (MegaMan.EXE) • Mayl Sakurai (Roll.EXE) • Eugene Chaud (ProtoMan.EXE) • Dex Oyama (GutsMan.EXE)|
Yai Ayanokoji (Glide.EXE) • Baryl (Colonel.EXE) • Higsby (NumberMan.EXE)
Dr. Hikari • Haruka Hikari • Ms. Mari • Mr. Match • Lord Wily • Bass.EXE
| Mega Man Battle Network • 2 • 3 • 4 • 5 • 6 |
Rockman.EXE Operate Shooting Star • Mega Man Network Transmission • Mega Man Battle Chip Challenge
Rockman.EXE 4.5 Real Operation • Rockman.EXE Phantom of Network • Rockman.EXE Legend of Network
Rockman.EXE WS • Rockman.EXE Battle Chip Stadium • Rockman.EXE: The Medal Operation
|Anime and Manga|
| MegaMan NT Warrior • Axess • Stream • Beast • Beast+ • Rockman.EXE: Hikari to Yami no Program • MegaMan NT Warrior (manga) |
Battle Story MegaMan NT Warrior • Gekitou! EXE Kyoudai Rockmeen! • Shuugou Zen'in Gagtte!! Rockman!
| Bastion • Battle Chip • Darkloid • Gospel • Forces of Darkness • Locations • Navi Customizer • Navi Cust Programs|
Nebula • NetNavi • PET • Program Advance • Emotion Window • Upgrades • Viruses • World Three
|Mega Man Star Force series|
| Geo Stelar (Omega-Xis • Mega Man) • Sonia Strumm (Lyra • Harp Note) • Bud Bison (Taurus • Taurus Fire) • Luna Platz (Ophiuca/Vogue • Queen Ophiuca) • Zack Temple (Pedia) • Solo (Laplace • Rogue) • A.C. Eos (Acid • Acid Ace)|
Patrick Sprigs (Gemini • Gemini Spark) • Hyde (Phantom • Dark Phantom) • Aaron Boreal • Bob Copper • Hope Stelar • Kelvin Stelar • Kazuma
| Mega Man Star Force • 2 • 3 • |
Shooting Star Rockman: Wave Change! On Air! • Rockman.EXE Operate Shooting Star
| Mega Man Star Force • Ryuusei no Rockman Tribe |
Rockman the Shooting Star • Rockman the Shooting Star Tribe
Shooting Star Rockman 3 • Shuugeki On-Air!! Shooting Star Rockmeen!
| Battle Card • BrotherBand • Link Power • EM Being • EM Wave Change • Planet AM • Planet FM • OOPArts • Dealer • Satella Police|
Transer • Star Carrier • Hunter VG • Visualizer • Star Force • Tribe On • Noise Change
Wave Scanner • Wave Command Card • Noise Kaizou Gear
|Super Smash Bros. for Nintendo 3DS / Wii U|
|Mega Man's Weapons and Moves|
|Mega Buster • Sliding • Mega Upper • Charge Shot • Super Arm • Metal Blade • Leaf Shield • Air Shooter • Crash Bomb|
Hard Knuckle • Top Spin • Spark Shot • Flame Blast • Slash Claw • Flame Sword
|Hyper Bomb • Ice Slasher • Shadow Blade • Skull Barrier • Plant Barrier • Danger Wrap • Tornado Hold|
|Other properties included in Super Smash Bros Nintendo 3DS / Wii U|
|- Sonic the Hedgehog -|
|Sonic the Hedgehog • Tails • Knuckles the Echidna • Shadow the Hedgehog • Green Hill Zone • Chaos Emeralds • Super transformation|
|- Street Fighter -|
|Ryu • Hadoken • Shoryuken|
| Super Mario • Donkey Kong • The Legend of Zelda • Kid Icarus • Metroid • Pokémon (also owned by Game Freak and Creature Inc.)|