Supervillains Puns

Poison IV.

"It's the end of the line for you!"

It's the end of the line for me!

Welcome to my layer.

For instance, Kang the Conqueror is a fictional supervillain appearing in American comic books published by Marvel Comics. In 2009, Kang was ranked as IGN's 65th Greatest Comic Book Villain of All Time

or

In the Simpsons , Kang is a Rigellian from Rigel 7. He and his sister Kodos continuously try to take over Earth and are usually seen attacking Springfield. Kang and Kodos have a lot of space weaponry at hand and have their own spaceship. They speak the Rigellian language, which, by coincidence, is identical to English. Although they look identical, Kang has a deeper voice than Kodos.

I guess you could say Skippy is a Kang Guru...

Some kind of superhero name for John F. Kennedy if he was a superhero. Bonus points for making it relevant to something he did as president. Even more bonus points for a supervillain name for Lee Harvey Oswald.

I hope this is the right place to make a request for a pun idea. If it isn't, I would appreciate point in the right direction.

Good luck!