Galacta Knight

Galacta Knight is one of Kirby and Meta Knight's foes.He is said to be the greatest swordsman who ever lived.

Pre-Mecha Sonic Saga
Galacta Knight was once freed by Meta Knight by a wish from Nova in order to become stronger swordsman. As a result, Galacta Knight was freed. The fight was a evenly matched between the two, but Galacta Knight was at first holding back and bested Meta Knight. During the destruction of Popstar, Galacta Knight escaped the planet and shifted himself into Smithy's factory. Seeing him as an unwelcome guest, Smithy orders the Axem Rangers X to kill him, but used his impressive swordsmanship to evade them. Smithy, impressed with Galacta Knight's sword skills, offers Galacta to join the Smithy Gang, and he accepts the offer.

Mecha Sonic Saga
Galacta Knight was first mentioned by Axem Red during the episode "Conflict on Yoshi's Island" where he noticed how Meta Knight bared a close resemblance to him, wondering if they were related in some way. Galacta Knight first appeared in the episode "Smithy's Assailant" whre he ambushes the heroes. At first, he went against Mario, Luigi, Shadow, and Yoshi, under orders from Smithy. He defeated them all with his deadly sword skills and was about to finish them off, until Kirby and Meta Knight arrived and attacked the pink knight from behind. Galacta then engages Kirby and Meta Knight in combat and tells the heroes that Smithy wants revenge on Mario and tells the heroes to meet Smithy at his factory.

Trivia

 * Galacta Knight is somewhat based on Mercanary Tao from the Dragon Ball series. Both started off as lone mercanaries, both were hired by villainous organizations due to their amazing fighting skills, and both were skilled swordsman.