And the award for 'Captain America's most tenacious foe' goes to....

THE RED SKULL! AAAH!

Yes, it's the Red Skull, and he's been a constant and incessant pain in Captain America's backside for...well, for a while.

If he isn't turning the Earth into a world-wide Nazi state or manipulating Cap's personal reality (a la Secret Empire), he's utilizing the stolen brain of Professor X to initiate citywide psychic terror.

So, the Red Skull is big red meanie, and his unrelenting meanness is exemplified by our Red Skull I'm Back Men's T-Shirt.

Yep, this Red Skull t-shirt for men features a classic, purposely distressed image of the Red Skull -- he's holding...a knife? Hmm. That's a little underwhelming.

A knife-shaped Cosmic Cube? Yeah, that fits.

Made from a blend of soft cotton and stretchy polyester, this heather-red Johann Shmidt t-shirt for men features Captain America's skull-headed, hate-spewing opposite number. Kick him again, Cap!!