1. Superman
2. Batman
3. Wonder Woman
4. Supergirl
5. Blue Beetle
6. Aquaman
7. Barry Allen
8. Cyborg
9. Hal Jordan
10. Arrow
11. Black Canary
12. Dr. Fate
13. Swamp Thing
14. Raven
15. Katana
16. Damien Wayne
17. Darkseid
18. The Joker
19. Harley Quinn
20. Poison Ivy
21. Catwoman
22. Red Hood
23. Deadshot
24. Ares
25. Captain Cold
26. Gorilla Grodd
27. Atrocitus
28. OMAC/Brainiac
DLC Pack #1: Sub-Zero/Raiden, Constantine, Starfire, Black Manta
DLC Pack #2: Judge Dredd, Hellboy, Vixen, Static
DLC Pack #3: Doc Manhattan, Spawn, Steppenwolf, Mera
That's my final answer.