All 80s Death Battle Combatants:
Jason Voorhees: May 9, 1980
Yoda: May 21, 1980
McGruff the Crime Dog: July, 1980
Raven: July 10, 1980
Deathstroke: September 11, 1980
Mario: July 9, 1981
Rogue: August 4, 1981
Rocket Raccoon: February 9, 1982 (616 Rocket at least)
Dig Dug: February 20, 1982
Red Hood: November 23, 1982
He-Man: December, 1982
Tetsuo Shima: December 20, 1982
Lobo: June, 1983
Luigi: June 21st, 1983
White Bomberman: July 1983
Kenshiro: September 26, 1983
Venom Symbiote: January 31, 1984
Leonardo, Raphael, Donatello, Michelangelo, The Shredder: Apr 30, 1984
Bucky O'Hare: May, 1984
Optimus Prime, Megatron: May 8, 1984
Voltron: Sept. 10, 1984
The Terminator: October 26, 1984
Son Goku: November 20, 1984
Master Roshi: December 4, 1984
Starscream: December 4, 1984
Lion-O: January 23, 1985
She-Ra: March 22, 1985
Apocalypse: July 16, 1985
Goomba, Koopa, Princess Peach, Bowser: September 13, 1985
Cable: October 8, 1985 (Nathan Summers debut)
Booster Gold: February, 1986
Link, Zelda, Ganondorf: February 21, 1986
Eddie Brock: May 17, 1986
Samus Aran: August 6, 1986
Unicron: August 8, 1986
Dracula: September 26, 1986
Jonathan Joestar, Dio Brando: December 2, 1986
Pit: December 19, 1986
Predator: June 12, 1987
RoboCop: July 17, 1987
Ryu, Ken Masters: August 12, 1987
Mega Man, Doctor Wily: December 17, 1987
Strider Hiryu: May, 1988
Ryu Hayabusa: October, 1988
Vegeta: November 7, 1988
Jotaro Kujo: April 3, 1989
Guts: October 1, 1989
Frieza: October 24, 1989
Mike Haggar: November 25, 1989