|Family and Relations||Unknown|
|First Appearance||Great Mazinger (TV): Ep 4|
Mugarissa is an insect Warrior Beast that served as the monster of the week in episode 4 of Great Mazinger.
Mugarissa has features of several insects including the abdomen and lower legs on an ant, the torso of and head of a caterpillar with a face on the forehead, a pair of thin arms and a smaller pair below.
Mugarissa is able to release silk to create cocoons for hibernation and can be used to tangle enemies. The claws on its upper arms can be extended to attack enemies. Its compound eyes can release beams of blinding light and can release acid from its mouth.
Scarabeth sends Mugarissa in its cocoon, after a while it comes out and faces Borot and he blinds him and disintegrates Borot's legs. Then Mugarissa destroys the city until Venus A throws him away with Borot along. While Venus is coming, who afterwards manages to destroy Mugarissa's upper pair of arms, and then destroy his compound eyes with her breast missiles. Mugarissa tries to flee, but Great Mazinger attacks him with the Thunder Break, destroying one of Mugarissa's hind legs. Mugarissa tangles the Great Mazinger with his silk threads, but Tetsuya is able to free himself using the Mazinger Blade and fend off a last-dich acid attack. He uses the sword to stab Mugarissa's human head, and then chops his Warrior Beast head with the Scrander's wings. He finishes off Mugarissa's body with the Great's Breast Burn.