You vote for the one who you like more, not who's the strongest one in a fight and have fun:
The Atom (Al Pratt) vs. Mr. Mxyzptlk
Kamandi vs. Chronos (David Clinton)
Vandal Savage vs. Green Lantern (G'nort)
Madame Xanadu vs. Queen of Fables
Rip Hunter vs. Mordru
Johnny Quick (Johnny Chambers) vs. Count Vertigo
Citizen Steel (Nathan Heywood) vs. Per Degaton
Firehawk (Lorraine Reilly) vs. The Shark (Karshon)
Ragman (Rory Regan) vs. Weather Wizard
Jakeem Thunder vs. King Shark
Crimson Fox (D'Amaris twins) vs. Kanjar Ro
Lobo vs. Dr. Polaris (Neal Emerson)
Blue Lantern (Saint Walker) vs. Indigo (Brainiac 8)
Zachary Zatara vs. Morgaine le Fey
Harley Quinn vs. Green Lantern (Jessica Cruz)
Blue Devil vs. Enchantress
B'wana Beast vs. Copperhead I
Nightshade vs. Dr. Light (Arthur Light)
Goldstar (Michelle Carter) vs. Evil Star II
Speedy (Mia Dearden) vs. Murmur
Mr. Terrific (Terry Sloane) vs. The Ultra-Humanite
Silver Sorceress vs. Tala
Thunder (Anissa Pierce) vs. Jewelee
The Ray (Ray Terrill) vs. Emerald Empress
Green Lantern (Arisia Rrab) vs. Bronze Tiger
Vibe vs. Rainbow Raider
Static vs. Orca
Lightning (Jennifer Pierce) vs. Punch (Clyde Phillips)
Detective Chimp vs. Kobra (Jeffrey Burr)
Artemis of Bana-Mighdall vs. Giganta
The Shade (Richard Swift) vs. Nemesis (Tom Tresser)
Arrowette (Cissie King-Jones) vs. Brick
Professor Zoom vs. Dream Girl
Bouncing Boy vs. General Zod
Aztek vs. Rampage
Superboy (Kon-El) vs. Klarion the Witch Boy
Blue Jay vs. Flamingo
Hourman (Rick Tyler) vs. The Wizard
Aqualad (Kaldur'ahm) vs. Icicle (Cameron Mahkent)
Gorilla Grodd vs. Max Mercury
Starman (Will Payton) vs. Dr. Phosphorus
Lightning Lad vs. The Mad Hatter (Jervis Tetch)
The Peacemaker (Christopher Smith) vs. Merlyn
Phantom Girl vs. Cheshire
Bumblebee vs. Sportsmaster (Lawrence Crock)
Lagoon Boy vs. Blockbuster (Mark Desmond)
Golden Eagle (Charley Parker) vs. Silver Banshee
Man-Bat vs. Val-Zod
Bulleteer (Alix Harrow) vs. Composite Superman (Joseph Meach)
Bart Allen vs. Tar Pit
Empress vs. Mongul I
Dr. Light (Kimiyo Hoshi) vs. Sonar (Bito Wladon)
Tim Hunter vs. Abra Kadabra
Chameleon Boy vs. Professor Pyg
Jack O'Lantern (Liam McHugh) vs. Red Lantern (Bleez)
Ms. Martian vs. Professor Ivo
Godiva (Dorcas Leigh) vs. Dr. Sivana
Green Arrow (Connor Hawke) vs. Cupid
Owlwoman vs. Hush
Rocket Red (Dmitri Pushkin) vs. Metallo
Osiris (Amon Tomaz) vs. Bizarro
Tula vs. Superboy-Prime
August General in Iron vs. Egg Fu (Chang Tzu)
The Atom (Ryan Choi) vs. Roxy Rocket