From The TimeSplitters Wiki

Farrah Fun-Bunny
Unlocked by	Challenge > 8-C Bone Grab
Species	Rabbit
Size	Normal
Accuracy	N/A
Agility	N/A
Stamina	N/A
Fire Proof	N/A
Shock Proof	N/A
Default AI	N/A
Native TimeZone	Unknown
First Appearance	Challenge Mode
Relations	None (possibly Duckman Drake)
Games	TS1

TS1 Gesture	Walks forward saying "Yeah, ok." and puts hands on hips.	TSFP Gesture	N/A
TS2 Gallery	N/A	TSFP Gallery	N/A

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She hasn't appeared in any other TimeSplitters games since TS1. Other than that, there's not really much to say about this character, except that she is rather unique yet bizzare all at the same time. Some fans expect Farrah to appear in TimeSplitters 4 due to her long absence. Possibly, she might have an relation to Duckman Drake. That part remains unknown.