Chris (Non-Orochi) Has potential to be High-Tier, but most of the moves that involve his speed are rather dull.
Chris (Orochi) Is comfortably mid-tier, he has only three specials, but can be used in a variety of situations covering distance.
Shermie is (IMO) a low tier character in Orochi mode, but redeems that drawback while she is played normally, needs time to master her, she's still more counter oriented.
Shingo =

Plain and simple.