From The TimeSplitters Wiki

Gaston Boucher
Unlocked by	Complete Normal Mansion Of Madness in Story
Species	Zombie
Size	Normal
Accuracy	N/A
Agility	4
Stamina	6
Fire Proof	5
Shock Proof	5
Default AI	4
Native TimeZone	1994
First Appearance	TSFP Story Mode
Relations	N/A
Games	TSFP

TS1 Gesture	N/A	TSFP Gesture	Bends down then stands up with arms stretched to side. "One bloodbath stew coming right up!"
TS2 Gallery	N/A	TSFP Gallery	His boudin blanc are to die for and his petit fours are murderously divine. Gaston considers himself a true master of the art of French killing.

Gaston Boucher is an unlockable character in TimeSplitters Future Perfect. He is a zombie chef that you fight in the Mansion Of Madness level at the end. On completing the level on Normal, he is unlocked as a playable character.