SNK vs. Capcom: Match of the Millennium Cheats

There are eight hidden characters. In order to play as them, you must beat the game and at the end, a picture of one of the characters is shown covered with blocks. It will randomly remove a few blocks, the higher the difficulty the more blocks. When all are uncovered you get that character.
NOTE-this is completly random.
The characters are Yuri, Akuma, Akari, B.B. Hood, Geese, M.Bison, Orochi Iori, and Evil Ryu.

Successfully complete game on Gamer difficulty.