A toy at a store that kids
don't want (usually the toy of a sidekick, disliked character or female character, etc) that remains on shelves for months
on end after all of the "cool" figures have been sold. Based
off of the term benchwarmer
A: Hey, have you seen ROTF Sideswipe lately?
B: Ugh, no, our Target's packed with nothing
but shelfwarmers like Arcee and Wheelie.