Here is every boss and in-game characters (Except for Dr. Light and Dr. Wily) for the NES Megaman's 1-6

Row 1: Megaman, Protoman, Roll, Breakman, Cut Man, Guts Man, Ice Man, Bomb Man, Fire Man, Elec Man

Row 2: Air Man, Metal Man, Bubble Man, Quick Man, Crash Man, Flash Man, Heat Man, Wood Man, Needle Man, Magnet Man

Row 3: Gemini Man, Hard Man, Top Man, Snake Man, Shadow Man, Spark Man, Bright Man, Pharoah Man, Drill Man, Ring Man

Row 4: Toad Man, Dust Man, Dive Man, Skull Man, Gravity Man, Wave Man, Stone Man, Gyro Man, Star Man, Charge Man

Row 5: Napalm Man, Crystal Man, Blizzard Man, Centaur Man, Flame Man, Knight Man, Plant Man, Tomahawk Man, Wind Man, Yamato Man