Arnim Zola

Arnim Zola is a Nazi scientist who has survived to the current day by experimenting on himself.

The Avengers: Earth's Mightiest Heroes
Zola is first seen as one of the prisoners in the Big House when Whirlwind is brought there. He escapes during the breakout.

When Baron Zemo finds out Captain America lives again, he gets Arnim Zola's help to keep Cap's new allies, the Avengers, busy with Doughboys while he faces Cap at Avengers' Mansion.