Fight him, befriend him, it doesn't matter. Recently, it has come to your attention that Pickle was a caveman who was pickled with a T-Rex in salt, in the midst of a battle. The Tyrannosaurus could not be revived, though Pickle could. He could not speak, the only notice he made that was similar was growling noises. He stayed in the Underground Arena, since it was essentially his oasis. He stayed, and he was brought food. He would eat only what he deemed strong enough to waste energy on.