Magolor first appeared during The Grand Finale, when his ship, the Lor Starcutter, crashed on Earth. Magolor is then found by Kirby, Meta Knight, King Dedede, and Bandana Dee. Magolor then sees that the Lor Starcutter has lost its parts and that they have scattered across the Earth. Kirby and his friends offer to help Magolor repair the Lor Starcutter, which pleases Magolor.
Later, Magolor is found by Mechtavius Destroyer, and during the heroes' attempt to protect Magolor, Magolor's true colors as a villain are shown when Mechtavius Destroyer brings Landia and the Master Crown to their location, and Magolor attempts to claim the Master Crown for himself. However, Mechtavius Destroyer's interference disrupts Magolor's plans.
Magolor reappears in Season 32 in his second form along with Zombie Reed, Fawful, Dimentio, Black Doom, and Marx as part of a team formed by Mechtavius Destroyer to instill chaos within the ranks of the heroes and prepare the Earth for "the day of reckoning".
Magolor is manipulative and power hungry, as he took advantage of Kirby and his friends for his own selfish reasons, though his plans backfired in the end due to Mechtavius Destroyer.
- Magolor is the first Kirby villain to appear in Super Smash Bros. Crossover.
- Before Magolor's reappearance in Season 32, one of his boss themes played when Mechtavius Destroyer fused Rosalina and Zero Two together. This was a foreshadowing of Magolor's return.