Koba is a highly intelligent bonobo. He has green eyes, but with his left being blind, and black fur. He is the close ally of the king of the apes in the Ape Colony in Muir Woods, Caesar, near San Francisco. Koba can speak due to being exposed to ALZ-113, a cure for Alzheimer's, which killed 99% of humans. He was abused and tested on by humans in the past, being delusional and cunning. He hates them, but does try to be compassionate and show care for other apes. He knows American Sign Language.