In '' The Pulverizer , '' Fishface gains full control of his robotic legs and bites Raph with venomous fangs , causing Raph to experience delusions , fever , and nausea .
In '' The Pulverizer , '' Fishface gains full control of his robotic legs . 
 During the battle he bites Raph with venomous fangs , causing Raph to experience delusions , fever , and nausea .