Knight Man is one of the eight Robot Masters introduced in Mega Man 6.
As his name suggests, Knight Man's design is based off medieval knights. He was created specifically for combat purposes, being a strong attacker with good defenses, although with low mobility due to his weight. He supposedly defeated 1000 robots, and has a very honorable nature. In the game, he resides in a large castle.
His special weapon is the Knight Crusher, which is a mace ball with a long chain that can attack opponents from long distances. When Mega Man uses it, it instead shoots out the spiked ball which can be fired in multiple directions. After being shot, it returns to Mega Man. In addition, Knight Man also wields a shield in battle that protects him from almost every attack. Because of this, Mega Man can only be able to damage when whenever Knight Man attacks.
Because of it's ability to pierce through his shield and armor, Knight Man weakness is the Yamato Spear. His defeat grants Mega Man the Knight Crusher.
In Super Smash Bros.
Knight Man appears in Super Smash Bros. Ultimate as a novice primary shield-type spirit