Doughboy (Earth-5180)

Doughboy was a living organic weapon created by the Brain to serve as his assistant, and later was of invaluable strategy with the formation of the Masters of Evil.

Creation
Doughboy was created by Arnim Zola following the end of World War II when he was recruited by Peggy Carter to become an agent of the recently formed S.H.I.E.L.D..

He envisioned to create numerous "Doughboys" to serve as biological living weapons to fight for S.H.I.E.L.D., however, was unable to duo to the technology of the time. He did, however, create one of them in secrecy to serve as his pet.

Unleashed
After Baron Zemo was released from the Raft, he approached Zola, now known as Brain, who was hiding ever since the fall of S.H.I.E.L.D. upon the discovery of HYDRA's infiltration on the agency, to create more Doughboys he could use to kill Captain America by infiltrating the Watchtower and finally enact his revenge. Zola used his original Doughboy in conjunction with many others to form a massive creature.

They were shown to be nearly indestructible, however it was discovered that they were vulnerable by sonic frequencies after Wonder Woman hit her Bracelets of Submission in conjunction, which managed to destroy them sans the original one, who returned to Zola.

Masters of Evil
After the Enchantress and the Green Goblin recruited Zemo and the Brain to join their recently team project, Zola brought Doughboy with him to help them defeat the Justice League. It helped defend the three generators guarded by the Masters of Evil members to defend Enchantress, Goblin, and Zemo, but was defeated by Batman.

It was later killed by the Enchantress trying to defend the Brain from her attack after she was betrayed by Baron Zemo and Green Goblin.