Flintheart Glomgold

Flintheart Glomgold, commonly known as simply Glomgold, is an anthropomorphic duck. He is Scrooge McDuck's archenemy and the second-richest duck in the world.

Biography
Glomgold is extremely similar to Scrooge McDuck, living the same way, looking very similar and having the same love of money; his difference is that he is pretty much was what McDuck would have been without a family — heartless and cold. Additionally he is, for all intents and purposes, as rich as him; the difference between their fortunes is actually, literally, a few centimetres of string.

He has his own Money Bin in South Africa, which is where he was born, though he later moved to Duckburg to spy on Scrooge more effectively.

Capture by the T.V.A.
Immediately after seizing the Aether as a result of the actions of the Avengers, Glomgold is arrested by the Time Variance Authority for creating a branched timeline and is taken into their headquarters.