BoyCap

BoyCap is CapBoy's estranged half-brother and the presumed antagonist of The Fantabulous Game.

Appearance
BoyCap has a red humanoid body with big angry eyebrows. His ship appears to be a dark red UFO, but is stated as a rough draft and is subject to change.

Le Fantabulous Game
While not directly in Le Fantabulous game, Fantabuloso has stated that he originally planned for the final boss to be some sort of "CapMan." However, the idea was scrapped due to being too confusing. However, he liked the idea of CapBoy Fighting himself, which ultimately led to BoyCap's creation.

The Fantabulous Game
In The Fantabulous Game, BoyCap is the assumed antagonist of the story. He kidnaps CapGirl with a giant net at the mountain where she and CapBoy live, leading to CapBoy falling off the mountain, kicking off the events of The Fantabulous game. Other than that, little else is known about BoyCap or his origins.