Bike:
He was an henchmen of grarvon, bike was a ruthless enemy of grim and he was a respectful enemy towards grim and his friends.then after grarvon death,he had a fight with grider(grim and werespider fusion) where he got defeated.grider gives a speech to him that turns him good,he slowly try to get along with grim and his friends but is not gonna be easy for him.

(He's holding grarvon head)

Bootleg:
He wasn't an actually bad just a clueless being that is part of a villain team (like those nice characters who are on the villains side). Bootleg is a tall bot who thinks grarvon and his henchmen are his friends but then later on Davey and fluffy were about to realize that he is part of the bad guys.bootleg left the villain team and became friends with the heroes and a freeman...or freebot.