Zack came to Tacugama at 4 years old in 2005. The owner brought him on a bicycle to the NGO "Warchild", and the people were able to educate him convince him to hand the chimp over. He grew up in Gorilla's group until tension over the ladies was causing him to have too many fights with Gorilla. Zack was eventually moved into Chippe's group, where he is learning how to become an alpha male.