This is one of those threads ima come back to as I remember more, but Bugs Bunny in Multiversus at launch was absolutely ridiculous. Every move in his kit was A+/S tier for its purpose and he had top tier movement. His main projectile could even slow opponents and combined with projectile perks, inflict more status effects. One of those characters where they heavily nerfed him 3-4 times and that mf was still objectively Top 3 for months afterwards
This is allegedly because WB wanted Bugs to always be one of the best characters in the game no matter what, so his entire kit was overtuned from the beginning
Any athletic 3&D Guard or SF in NBA 2K10-16. JR Smith, Shannon Brown, Iguodola, Gerald Green, etc. Even with a 78-83 overall rating those kind of players abused the game on offense cuz you can get them hot with easy dunks/layups from their speed and then they would just start going crazy from 3. I had multiple games with the lakers where Kobe would have 25 pts from all over the floor and Shannon Brown would have 30-40 entirely off dunks and 3s