Cooper, also known as Coop, is a wolfdog. Tory was the first human to know of Cooper after she rescued him when he fell down a hole, Then several months later Dr Marcus Karsten stole him and infected him with a combination of human and cannine parovirius. The now Virals came across Cooper whilst cleaning a dog tag, they decided to steal him from the labratory and take him back to The Bunker and nurse him back to health. He lives now with Tory, and is fully normal.
Coop is shaggy with big ears. During Code it is mentioned that he has grown a lot in size.