Evil Ryu and Evil Iori:

Successfully complete both the Capcom
and SNK Grooves in arcade mode with 
"Normal" Ryu and "Normal" Iori. Secrets
34 ("Evil" Ryu) and 49 ("Evil" Iori) 
will now be available for purchase in 
the secret shop. They cost 7,000 vs. 
points each. To play as the "Evil"
version of one of those characters 
after they are purchased, hold Start 
and press A, B, X, or Y while that 
character is highlighted at the 
character selection screen.