From The TimeSplitters Wiki

Nikolai
Unlocked by	Default
Species	Human
Size	Normal
Accuracy	5
Agility	6
Stamina	6
Fire Proof	N/A
Shock Proof	N/A
Default AI	3
Native TimeZone	1990
First Appearance	TS2 Story Mode
Relations	Private Poorly (Zombie Form)
Games	TS2

TS1 Gesture	N/A	TSFP Gesture	N/A
TS2 Gallery	Nikolai is a little too curious for his own good. He's always telling Sgt. Shivers that he knows best and that he can sort out whatever is going on in the secret base under the Dam.	TSFP Gallery	N/A

Nikolai is a private in the Arctic Forces guarding Oblask Dam. After hearing gunshots in the lower levels of the facility, he goes to explore the underground labs with Sgt. Shivers. Both encounter a zombified soldier and both can only scream in terror as the creature attacks. Like Sgt. Shivers, Nikolai was killed by the creature and later appeared as a Zombie.

Movies

Siberia's Introduction Video (featuring Nikolai)