Taking place in Kirby's Dream Land 2, when Kirby collects all of the Rainbow Drops and defeats the currently possessed King Dedede, drives out the possesser from Dedede known as Dark Matter. Using all the Rainbow Drops, Kirby forms them into the Rainbow Sword and goes up to space to face Dark Matter.(Because you know, ALL final battles have to take place in outer space!*bricked*)
I would've drawn Dark Matter in his swordsman form, but I decided to draw his regular form since I'm more used to this form and it is his TRUE form.
Kirby characters © Nintendo/HAL laboratory