Thunk

Thunk
Species	Neanderthal
Age	40,000 years
Born	Late Pleistocene
Gender	Male
Status	Alive
Family	Laaa (Brother) Grug (Brother)
Portrayed By	Michael Cera

Thunk is a Neanderthal who is one of the brothers of Laaa. He lives on Primeval Island with other prehistoric animals and humans.