Here's the known Marvel vs Capcom: Infinite Roster for the Marvel Side (Venom and Black Panther are dlc, there might be more dlc in these):
- Black Panther
- Captain America
- Captain Marvel
- Doctor Strange
- Dormammu
- Gamora
- Ghost Rider
- Hawkeye
- Hulk
- Iron Man
- Nova
- Rocket/Groot
- Spider-Man
- Thanos
- Thor
- Ultron
- Venom
- Winter Soldier
(conflicted reports on Ant-Man, he wasn't in the datamine)
Most of these were already confirmed, some are datamined.
Surely I can't be the only one who thinks this is messed up, right?