Marvel's The Punisher: 31 Easter Eggs & References You Need To See

6. Testicular Damage

In the seventh episode we get to meet Col. Morty Bennett who isn't a character from the comics, but who has a link to them all the same. When Micro helps Frank track him down, they discover he enjoys some more colourful sexual antics. That leads to a delightfully funny little moment when Frank tells him to be silent and he dutifully puts the ball gag back in his mouth.

Billy Russo then tells him that if it wasn't for himself and Rawlins turning up, Castle would probably have Bennett's testicles hooked up to a car battery - as if that would be some sort of threat to a man like Bennett. He'd get off on it.

Anyway, the threat refers back to Frank Castle doing that exact thing to Barracuda in Garth Ennis' Punisher Max.