Something interesting posted on eventhubs
"Sorry guys but I'm calling this a major troll from Boon.
First off in DC universe acronym theory MMH is Martian Manhunter not MM. I said this a while ago and I will say it again, the folder on his desktop that was named MM is for Mirror Master who is one of the Flash's main nemesis.
In the most recent issue of the prequel comics Mirror Master makes an appearance. I don't know why they would introduce Mirror Master (again the true MM) in the comics if he wasn't going to be playable in the game. They revealed Aquaman when he appeared in the prequel comics so I think we will see some new characters when they appear in new issues.
On Boons twitter the most requested character is MMH. I think Boon is trying to fool us into believing he isn't playable at release. He will probably not be revealed until release ala Smoke on MK9. Such an integral figure in the DCU it would be idiocy not to put him in the game because he would make a great character, have great mechanics and would be visually different (green skin, purple costume, etc).
ZOOM? LOL. He doesn't have a prayer.. I've never heard anyone ever request him. Proof of the troll right there. Grodd, Captain Cold and Mirror Master are all more known and likely than Professor Zoom.
Unofficial DLC vote sounds like malarky. To me the whole thing is hinting at a Flash villain (MM) and trying to make us believe MMH is a post-release character. Am I the only one who sees this as BS?"