|Artwork of Ben K from Mega Man 6.|
Ben K is a warrior robot. Ben K was a robot that was originally used as a gate guard in historical dramas and reenactments, but was repurposed for combat by Dr. Wily. They are enemies that originate from Mega Man 6 from Yamato Man's stage, before later reappearing in Mr. X Stage 3 and Wily Stage 1.
When Ben K spawns, it will pull a spear from its quiver, rotate it in front of itself, and then launch it horizontally in its facing direction, before repeating the pattern from the beginning.
When Ben K is spinning a spear, it will protect itself from damage from the front, it is however still vulnerable from damage from above, below and behind. Ben K will eventually launch its spear as a projectile and pull another spear from its quiver, it is vulnerable to damage from the front during this small window of time.
The spinning spear, both when spun by the Ben K, and while being launched as a projectile, both deflect most projectiles fired at it. The spinning spear projectile can be deflected by Shine and Proto Man's Shield.
Ben K will turn to face the player if they get behind them, at the end of it's spear spinning animation and just before the spear is launched as a projectile.
- Ben K's name and design is loosely based upon the Japanese warrior monk Saito Musashibō Benkei.
- Despite Ben K's artwork and sprite depicting the enemy having multiple different varieties of pole arm weapons in its quiver, such as naginatas, the enemy only uses the same type of spear over and over again.