He is a primitive man found perfectly preserved in a saline rock formation (hence he is 'pickled'). This giant humanoid lived originally in the Jurassic/Cretaceous era.

Contex: You were brought to the underground fighting arena to execute a specimen by any means necessary, at first it just seems like this may be something simple, you were wrong.

Main Objective: Kill Pickle by any means necessary (try not to die)