In Resident Evil: Revelations for the Nintendo 3DS, there are several characters that you can unlock to use in the new co-op Raid Mode.
Here are the characters you can unlock, and how to unlock them.
Morgan – Find the real exit on Stage 21 in Raid Mode
Norman – Collect all rare weapons in Raid Mode
O’Brian – Complete all Raid Mode stages on the Abyss difficulty
Raymond – Complete all Raid Mode stages on the Chasm difficulty
Check out my other article for the full list of unlockables in Resident Evil: Revelations for the 3DS.