The Alphabet Of Video Game Characters

Alien, Bomberman, Chun-Li, Donkey Kong, Earthworm Jim, Freeman, G?????, Honda E., Inky, J--, Ken, Link, Mario, Nemo, Opa Opa, Pac Man, Q*Bert, Rockman, Sonic, Tetris, U?????, V?????, Wario, X?????, Yoshi, Zelda.

J,G,U,V and X are still unkown to me. Any Ideas?

Link: Video games characters alphabet