Watchers movie and novel

 https://en.wikipedia.org/wiki/Watchers_(film)

https://www.goodreads.com/book/show/32423.Watchers

https://en.wikipedia.org/wiki/Watchers_(novel)

The Outsider

Another genetically engineered life-form created in the same laboratory as Einstein. The Outsider, whose appearance is monstrous and terrifying, was treated with scorn and contempt, resulting in a deep hatred of human beings, and especially of Einstein. His base form is a baboon, but with his most dangerous features enhanced, e.g., claws and jaws.

https://en.wikipedia.org/wiki/Watchers_(novel)#Characters

https://www.goodreads.com/author/show/9355.Dean_Koontz