•Chrom still appears in Robin's Final Smash. You can see it around the 2 minute mark of this video.

•Mewtwo and Lucas were trophies before they were DLC in SSB4.

•Some playable characters have appeared as Spirits.

•Rathalos has proven that assists can have more than 1 role.

•There have been playable assists in other games.

• There are ways in which assists can be made playable.

HMMMMMMMM...