You vote for the one who you like more, not who's the strongest one in a fight and have fun:
Gorilla Grodd vs. Lightning Lass
Lashina vs. Green Arrow (Connor Hawke)
Hourman (Rex Tyler) vs. The Time Trapper
Owlwoman vs. Hush
Vigilante (Greg Saunders) vs. Killer Moth (Drury Walker)
Lilith Clay vs. Dr. Light (Arthur Light)
Witchfire vs. The Anti-Monitor
Captain Comet vs. Blackfire
Dove (Dawn Granger) vs. Ursa
Red Star vs. Tala
Freddy Freeman vs. Lightning Lord
Brainiac vs. Green Lantern (G'nort)
Godiva (Dorcas Leigh) vs. The Pied Piper
Bizarro vs. Ambush Bug
The Shining Knight (Sir Justin) vs. Firefly (Garfield Lynns)
Celsius vs. Doomsday
B'wana Beast vs. The Gentleman Ghost
Despero vs. Shadow Lass
The Knight (Beryl Hutchinson) vs. Major Force
Crazy Jane vs. The Mad Hatter (Jervis Tetch)
Firestorm (Raymond & Rusch) vs. Icicle (Cameron Mahkent)
Flex Mentallo vs. The Trickster (James Jesse)
The Atom (Ryan Choi) vs. Felix Faust
Harley Quinn vs. Karate Kid (Val Armorr)
Argent vs. Black Spider (Eric Needham)
General Zod vs. Hawk (Hank Hall)
Bart Allen vs. The Top (Roscoe Dillon)
Element Woman vs. Maxie Zeus
Chameleon Boy vs. Toyman (Winslow Schott)
Nightshade vs. Copperhead I
Hot Spot vs. Dr. Poison II
Lobo vs. Roxy Rocket
Ms. Martian vs. Reactron
Dr. Mist vs. Mordru
Green Lantern (Mogo) vs. Mongul I
Ice vs. Effigy
Judomaster (Sonia Sato) vs. The Ventriloquist (Arnold Wesker)
Tula vs. King Shark
Phantom Lady (Jennifer Knight) vs. Count Vertigo
Jack O'Lantern (Liam McHugh) vs. Black Mask (Roman Sionis)
Gypsy vs. Amazo
Bane vs. Lightray
Wild Dog vs. Lock-Up
Bat-Mite vs. Egg Fu (Chang Tzu)
The Creeper (Jack Ryder) vs. Giganta
Agent Liberty vs. KGBeast
Dolphin vs. Non
Atom Smasher (Al Rothstein) vs. Dr. Alchemy (Desmond Albert)
Congorilla vs. Mr. Mind
Lady Blackhawk vs. Sonar (Bito Wladon)
Aquagirl (Lorena Marquez) vs. The Shark (Karshon)
Mr. Terrific (Michael Holt) vs. Brick
Talon (Calvin Ross) vs. Livewire (Leslie Willis)
Batman (Terry McGinnis) vs. Chronos (David Clinton)
Wild Huntsman (Albrecht von Mannheim) vs. The Ultra-Humanite
Steel (John Irons) vs. Dr. Polaris (Neal Emerson)
Thunderlord vs. Professor Zoom
Shade, the Changing Man vs. Indigo (Brainiac 8)
Jet (Celia Windward) vs. Killer Croc
Black Orchid (Alba Garcia) vs. The Clock King (William Tockman)
Bushmaster (Bernal Rojas) vs. Captain Boomerang (George Harkness)
Mirror Master (Sam Scudder) vs. Green Lantern (Arisia Rrab)
David Zavimbe vs. Silver Banshee
Lightning Lad vs. Weather Wizard