Play as Vitriol
To play as the hidden fighter Vitriol, at the fighter-select screen, press Right, Right, Right, Up, Up, Down, Left, Left, Down, Down.

2 more characters from sonic
At character select screen input the following.

Tips from sonic
Mayhem can’t jump,but is strong. Rapidly press A with Assault for a special move.

Another 2 More Characters from Justin
Superviser-down, right, down, up, right, down, left, down, up, right, up
Anil-8- up, right, down, right, right, up, left, up

Now you can get Anil-8 ( based on Necroborg)
And you can get Superviser( leader of the game)
Could you please find the code for Naden, Rack, Sane, Ard -1,Suppressor-