From The TimeSplitters Wiki

Peekaboo Jones
Unlocked by	Complete Story Mode up to Planet X
Species	Human
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	1965
First Appearance	TS1 Story Mode
Relations	Elijah Jones (Great Great Grandfather) Mordecai Jones (Great Great Great* Grandson)
Games	TS1

Peekaboo Jones is a rather vague character. He wears hawaiian clothes and when selected get's cheered on by a crowd.

TS1 Gesture	Looks up "mm?", then shakes head saying "I'm risking my hide for nowone!" Waves his hand then says "You do your own dirty work."	TSFP Gesture	N/A
TS2 Gallery	N/A	TSFP Gallery	N/A

*This 'great' is assumed, due to the difference in time.