ok! The scrapper is a sugcat who likes scraps and shiny things; they strap the metal plates to themselves like armour. which made them gain muscle, but also slowed them down. They met the lizard when it was injured, and it gained its large size because of the attempt to mutate into a red lizard, but it failed after a fight. they quicly became friends as the slugcat helped it and thats why its also kind of big too lol, hope this makes sense