People in these threads always seem to have trouble with a couple of moves, so let's clear things up. Remember, the original names are in Japanese and the English translations can be misleading sometimes:
>Tail Glow, originally "Firefly Light"
>Not all Pokemon with a glowing tail should get it
>It was rightfully Volbeat's signature move until Game Freak decided to give it to Manaphy for some reason, probably because muh legendaries
>Quiver Dance, originally "Butterfly Dance"
>Not all Pokemon capable of dancing should get it
>Rightfully, it's only learned by butterfly Pokemon
>Sucker Punch, originally "Surprise Attack"
>Even the English term "sucker punch" doesn't refer to a punch
>"A sucker punch or suckerpunch is a blow made without warning"
>So not all Pokemon with punching attacks should learn it and it shouldn't gain a boost from Iron Fist
I'm probably forgetting something but these are the ones that people have most trouble with.