About 110,000 Robot Master submissions were submitted for Mega Man 8—exactly half the number sent in for the previous game. Three templates (Sword Man, aka Katana Robot; Clown Man; and Search Man) were provided to fans to aid with their own designs. Some of the unused Robot Master concepts are shown during the ending credits.
| Robot Master | Special Weapon | Weakness |
|---|---|---|
|
Tengu Man |
Tornado Hold |
Ice Wave |
|
Astro Man |
Astro Crush |
Homing Sniper |
|
Sword Man |
Flame Sword |
Water Balloon |
|
Clown Man |
Thunder Claw |
Tornado Hold |
|
Search Man |
Homing Sniper |
Flame Sword |
|
Frost Man |
Ice Wave |
Flash Bomb |
|
Grenade Man |
Flash Bomb |
Thunder Claw |
|
Aqua Man |
Water Balloon |
Astro Crush |