Protect in Generation I is probably my biggest Mandela Effect thingie in the games.I rarely get Pokemon mixed up with the generation they're from, but every time I try and use the Time Capsule I always seem to get caught out with a move I forgot didn't exist in RBY. Fair enough, Outrage and Perish Song are Gen II moves, but there are a bunch of Gen II moves that feel so "basic" in concept (Protect, Safeguard, Encore, Foresight, Endure, Baton Pass*) you'd be forgiven for thinking that they originated in Gen I.
About animations, everyone clown on move animations in the mainline games, but I remember the Stadium-esque ones also have their fair share of wack animations.
Agility for example always looked bad, in fact Pokémon Battle Revolution might have my least favorite take of this move. I hate the blur this game gives on this move and others.
Seismic Toss, on the other hand, is perfection and I will not accept any other opinion.