>>53649631You don't understand anon.
The sandwich thing is deep lore.
Arven used to take care of the bike lizard when he was younger. His parent forced him to do that but the lizard still liked Arven because he gave it attention which the prof probably didn't really do. I guess he also fed it sandwiches which is why its so fond of them. Remember at the start of the game where it powered up after eating your sandwich? I think it's not because it was actually hungry, the sandwich just gave it the comfort at the moment to overcome its trauma.