(Greninja nickname) (X) Oh man, this guy was great. I used him all the time, eventually leveling him up to level 100. Once more, i spelled the league and the champ.

Poseidon (UM) This guy was able to take not one, not two, not 3,but FOUR PHOTON GYSERS FROM ULTRA NECROZMA! OVERPOWERED!

Dick (Male Weedle) Killed a Kakuna. True final boss.

The Dragon squad (Dragonite, Salamence, and Goodra.) (PSMD) I mean, for having level 50 AND 55 POKEMON IN THE MAINGAME TAHT YOU CAN GET E A R L Y that's over powered as eff bro.

Level 100 Raichu in Crystal Because I had too much free time

Back in the day i had issues trying to finish platinum, might be because for some reason i wanted a lvl 100 piplup so i wasn't letting him evolve. One day i went to a friend's house and her brother had the game with hacked pokemon on it. Shiny Arceus lvl 100 (platinum) i was unstoppable, even when he didn't listen to me that much because i didn't have too many badges.

I remember almost going through all of Johto in Soul Silver with only my Typhlosion. It's when I got to the Elite 4 that I needed to level up the other stuff I caught.

Shiny Giratina lv. 100 in Gen 6. It was only defeated by itself.

I mean, obviously Magikarp. Didn’t any of you hear about the guy who beat one of the gen 3 games with nothing but a Magikarp?

A Registeel on Omega Sapphire, he managed to beat the champion without help xD.