Board Thread:Fun and Games/@comment-8556753-20140407190914/@comment-6548012-20140414173607

First, I don't know if we can consider it as an invention, but I would say the Symbiote, which infanted Venom, Carnage, Anti-Venom, Agony, Scream and Toxin.

Maybe the Hulkbuster suit made by Anthony Stark to battle Hulk, or the War Machine, ade by the same guy for the Colonel Rhodes.