It appears at the very end of Guest Star ???? Star Allies Go!, descending as a butterfly and taking form after doing something with Galacta Knight. As such, its attacks consist of a mix of swordplay and magic.
It takes on a more powerful form called Morpho Knight EX at the end of the ThreeMageSisters' Guest Star run as well as near the end of Soul Melter EX.
It reappears in the post-game campaign of Kirby and the Forgotten Land, stealing the final boss spot from Soul Forgo. However, after Morpho Knight’s defeat, Forgo retakes the spot, using the DNA it absorbed from Morpho Knight to become Chaos Elfilis.
