Defeating him unlocks the Elusive Foe: Fantastico medal.
Fantastico will occasionally become invincible, in which he can still fire and use abilities. As such, it is ideal to keep your distance and retreat upon him becoming invincible.
Due to the way he turns invincible every few seconds, a great character to use to defeat him is the Citron. Fire at him when he becomes vulnerable and block his attacks with the Peel Shield when he's invincible. This allows you to prevent yourself from getting constantly vanquished.
- He has the same costume as Majestico, the character on the zombie promotion stage.