#whose who

Wheeljack definitely dresses as a cowboy, he keeps trying to lasso Ratchet and Ultra Magnus, they aren't amused.

Arcee dresses like a ninja, she's been learning about them and loves their stealth tactics so of course she won't pass up a chance to try the outfit out.

Bumblebee dresses as a typical Draculaesque vampire, he loves Halloween and he thinks you can't beat a classic.

Bulkhead buddy costumes with Bee and dresses up as a wolfman. Wheeljack convinces him to actually howl at the moon.

Ratchet is too busy to dress up nor does he have any desire to but Bumblebee puts one of those black cat ears headbands on him and tapes a plush black cat tail to him anyway. He doesn't remove them.

Smokescreen dresses up as a baseball player. He likes the outfits and he thinks he looks pretty cool in one. He even makes his own bat to go with it.

Ultra Magnus also sees no need to dress up but Smokey convinces him to at least put on a trench coat and fedora, he tells him it's a detective look but as soon as Smokey and Jackie start making "hand car man hook door car hand" jokes he takes it off.