Desparation Move
When fighting as Flynn with very low life, face right, hold R, and press Down, Down/Right, Right, X. Flynn will turn red and gain extra power.
Super moves at any time
When playing as Flynn, Echo, or Prokop, grab an opponent from the front. Sweep the D-pad in a Half-Circle towards the direction your character is facing and press the Attack button to execute the super attack. For Norton or Al, execute the same motion when you grabbing your opponent from behind.