i know some characters are fit perfect in one player on any fighter. in my case i love yoshi from tekken cause of the flea even one of my friends made a song about that. also his moves a lot of fun despite hes a hard character to use

in the marvel fighters made by capcom it will be captain america cause i love how he made use of his shield as a projectile. and his hyper combo final justice is once epic hyper combo

One of my favourite fighters in a game would have to be Yoshimitsu, originally from Tekken, but now in Soul Calibur.

I gotta say fei long, and ryu from street fighter, reptile, and baraka from mortal Kombat, and law from the tekken series, all really good fighters.

I have so many favourite fighters that my list would be endless if I let it.
I have to go with the fighters that make me laugh.
"Dan" from "Street Fighter".
"Yoshimitsu" (again) from "Soul Calibur".
"Mortal Kombat" has a ton of them. "Noob Saibot" or the Robots.
"Tekken" has Another Bruce Lee Clone named "Law".
"Killer Instinct" has a bunch "Sabre Wolf", "Bone", "Maya" (a cave woman/amazon?).
"Night Warriors" has the cat-girl "Felicia", or the Zombie. (Plus the Whole cast seems to make me laugh anyway.)
"King of Fighters" has Many. The Korea Team of Fugitives, The All Girl Team you can knock the clothes off of, the Merc Team, And many more.
In Capcoms "Fighting Evolution" you can Pick a "Giant Dinosaur" to fight against Ryu. (Truely a forgotten gem of the past.)
"Dead Or Alive" has the Drunken Master "Brad Wong".

With Fighting Games??
You can not go wrong with comical characters.

Good Luck To All.
I'm done. Stick a fork in me.
Peace.