Source: comicvine.gamespot.com
6. Bill Foster
Although he never dons the costume in the film, Dr. Bill Foster is an important character in Ant-Man and the Wasp.
In the film, he’s a former Hank Pym colleague who helped with Project: Goliath, an early attempt at Giant-Man technology. But after tension developed between him and Hank, Bill went off on his own. At that point, he met the newly powered Ava Starr and helped her build the Ghost suit.
Bill was Hank’s lab assistant in the comics. He helped Hank when he was stuck at a height of 10 feet. He then found a way to give himself growing powers and took the name Black Goliath.
Bill’s wife was Claire Temple, whose MCU doppelganger hangs out with the Defenders a lot. He changed his code name to Giant-Man for a while, then lost his powers for a time. He regained his powers and took the code name Goliath.
In the end, Ragnarok – a malfunctioning Thor clone in operation during Civil War – killed Bill, but his nephew assumed the Goliath identity and costume.
