Moves/abilities you thought were introduced in later gens

[E.C.A.M.B.S.]

I was looking at the move Me First today, which I had always thought was introduced in Gen 5, and realized that it came in the 4th Gen. This may be because I associate Me First with After You, which is a Gen 5 move for sure. The same happened with Rock Wrecker, which was apparently Rhyperior's signature move in Gen 4. I had only seen Gen 5 Pokemon such as Crustle and Conkeldurr use it

As for abilities I always thought that Adaptability was Gen 5 but I guess not. The same goes for Leaf Guard. Which abilities or moves did you think were introduced later than they actually were?

[Mockery for One]

Not moves, but Pokemon, but I mistook Slugma, Skarmory, and Phanpy for Hoenn natives.

Many people thought Waterfall was a 2gen move, but it existed in 1gen, and only the Goldeen line could learn it... At Lv. 39.

[The name master]

Not moves, but Pokemon, but I mistook Slugma, Skarmory, and Phanpy for Hoenn natives.

I thought skarmory and Slugma were hoenn pokemon too till I found out they were from johto. I knew Phanpy was a johto pokemon though...

[E.C.A.M.B.S.]

I was looking at smogon's suggested sets for Drapion in DP earlier today and noticed that its ability was Sniper. I had always thought that Sniper was introduced in Gen 5 as a hidden ability of Spinarak, since a whole slew of hidden abilities like Rattled and Moody came in Gen 5.

I also thought that Super Luck was Gen 5 because I only found out about it when I saw it on Pidove. Another of one of Pidove's abilities, Big Pecks, I mistook for a Gen 4 ability, maybe because it reminds me of Thick Fat

[sans the skeleton]

wait moody came in gen 5? i thought bidoof had in in gen 4-
looked it up, so apparently it did come in gen 5. huh! that's one of the examples i'll provide then lmao

[MonsterMon64]

My memory's a bit iffy about it, but I think the first time I had even heard of Kinesis was in a Gold and Silver Player's Guide... unless it was listed in the Red and Blue player's guide, which is even weirder, considering Kinesis wasn't legitimately learned by anything until Yellow.

Either way, the move is pretty much fated to be obscure. Never mind that lawsuit, it's an inaccurate, accuracy-reducing move which hasn't seen any improvement since its debut, and you'd need to pay a Move Reminder just for the novelty of having the move. Even Flash got better treatment Gen 4 and up, yeesh.

[Captain Jigglypuff]

I always thought that Spark was Gen 1 until RSE came out and the Internet was more common.