Awhile ago, they have Confirmed that Wheelie and Brains are buddies. For a time, fans actually thought Brains was Wheeljack, so Wheelie and Wheeljack were friends. Here's what I imagined, Wheelie would be sitting on Wheeljack's shoulder whenever Optimus was making a speech. Wheelie would pull out weapons and stand on Wheeljack bald head shooting, just like a Human Alliance. Also, Wheelie would have helped Wheeljack build his Mech Tech Weapons, by handing him tools and going though those small spaces. Wheeljack: Screwdriver? Wheelie: Screwdriver. Wheeljack: Plyers? Wheelie: Plyers. Wheeljack: Monkeywrench? Wheelie: Can't now. Wheeljack: Why not? Wheelie: Optimus Primal is not done with it yet.