Emperor

Not THE Initial D Kyoichi Sudo, but a character in S0 nonetheless.

Season 0
One of OP's friend using Sudo as avatar, and one of the 2 persons OP gives credit for TFR existing today.

Season 7
Emperor joins BCW but for some reason, has a spanish accent and stole someone's car.

Episode 9
A band of mystery people corners him and call him "Peleador Ushiromiya", before making him disappear.