Lightfall Part II is the twentieth episode of Mega Man: Fully Charged. It aired on Cartoon Network on October 7, 2018 and marks the first appearance of Namagem.
Mega Man and Mega Mini train by practicing the Quick Shift ability, letting them rapidly cycle through their copied schematics. Obsidian arrives at the Lighthouse to find the Mega Key, a device that gives people total control over robots. While fighting him, Rush take the blast from one of Obsidian's guns, angering Mega Man who then proceeds to use his new technique to finally defeat him. Mega Man initially wants to destroy him, but shows mercy, instead lecturing him on the power of teamwork. A new robot, dubbed Namagem, arrives and rescues Obsidian, who returns to his base where the Robot Masters are startled by Sgt. Night's loss. Rush is fixed and given his own armor, and now joins Mega Man on his missions to fight crime.
- Sgt. Breaker Night as Lord Obsidian is defeated
- Namagem makes his first appearance
- Rush gets a new upgrade.
- Aki Light/Mega Man
- Mega Mini
- Sergeant Breaker Night/Lord Obsidian
- Suna Light
- Dr. Light
- Drill Man
- Wave Man
- Fire Man