From The TimeSplitters Wiki

Berserker Splitter
Unlocked by	The Hooded Man, Easy
Species	TimeSplitter
Size	Large
Accuracy	N/A
Agility	2
Stamina	6
Fire Proof	5
Shock Proof	5
Default AI	5
Native TimeZone	2401
First Appearance	TSFP Story Mode
Relations	TimeSplitter 1, TimeSplitter 2, Scourge Splitter, Splitter Crow, Reaper Splitter
Games	TSFP

TS1 Gesture	N/A	TSFP Gesture	Jumps while swiping
TS2 Gallery	N/A	TSFP Gallery	He'll eat you before you even know he's there. That's how hard he is.

The Berserker Splitter is the only TimeSplitter to appear in TimeSplitters: Future Perfect. They attack by shooting bolts of energy that track their enemies. They are similar to their Reaper Splitter cousins in appearance, but they tend to walk on all fours rather than upright like the Reaper Splitter, and their skin has reddish hue, in stark contrast to the Reaper Splitter's pale white skin. And while Berserkers have to walk to get to places, the Reaper Splitters can teleport to areas instantly.

The Berserker Splitter appears in the opening cutscene of TSFP and is seen drinking the blood of a fallen space marine. It looks up to see Cortez's ship before going back to its drink.