From The TimeSplitters Wiki

Crispin
Unlocked by	TS2: Amateur League > Too Hot To Handle > Monkey Immolation with Gold or Better
Species	Human
Size	Normal
Accuracy	7 of 10
Agility	6
Stamina	4
Fire Proof	8
Shock Proof	5
Default AI	TS2:4 TSFP:3
Native TimeZone	N/A
First Appearance	TS2 Story Mode
Relations	N/A
Games	TS2,TSFP

TS1 Gesture	N/A	TSFP Gesture	Gets up from ground as his body lights on fire and says "Burn baby, burn!"
TS2 Gallery	Crispin's had one too many brushes with the Flamethrower- even he can't remember what he used to look like...	TSFP Gallery	Crispin's had one too many brushes with the flamethrower- even he can't remember what he used to look like...

Crispin appears to be a normal zombie that has been set alight. However, he is actually a human whose skin was blackened from being set on fire one too many times. Keep in mind that Crispin is not on fire when being played in Arcade Custom.

Trivia

When character abilities are turned on, Crispin is virtually fireproof due to his high amount of Fireproof Stats.