Beetle

Abner Jenkins, a.k.a. The Beetle (voiced by Steve Blum and Mark Hanson) is a Marvel Comics supervillain who is an exceptionally skilled mercenary. Commonly hired by Doctor Octopus, Beetle regularly ran afoul of Spider-Man, and was defeated on almost every occasion. He had temporarily joined the first Sinister Six.

He later became a member of the Masters of Evil. However, when they went undercover as the superhero team the Thunderbolts, Beetle posed as the high-tech flying hero Mach IV. However, after Baron Zemo's treachery, Jenkins disposed of his identity as the Beetle and fully became Mach IV, now a genuine hero.