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Sidewinder
Real name: Seth Voelker
Aliases: None
Identity: Publicly known
Occupation: Retired professional criminal
Citizenship: United States of America
Place of Birth: Kenosha, Wisconsin
Known relatives: Amelia Voelker (daughter), Mrs. Voelker (ex-wife)
Group Affiliation: Serpent Society, Serpent Squad
Education: Advanced degree in economics

Height: 5'9"
Weight: 180 lbs.
Eyes: Blue
Hair: Black, balding

Powers: None.
Abilities: Sidewinder is a skilled financial expert, business partner, and strategist.
Weapons: None.
Paraphernalia: Sidewinder's cloak contains electronic circuitry that enables him to open an aperture into another dimension.  Sidewinder activates the cloak mentally through a device surgically implanted in his body, enabling him to travel "sideways" through interdimensional space, taking with him whatever and whomever he drapes his cloak over.

History: The leader and founder of the Serpent Society, Sidewinder has proven to be an intelligent and valuable asset to the criminal underground.  Formerly a college economics professor, his greed motivated him to aid Roxxon Oil into finding the Serpent Crown during his first mission alongside the Serpent Squad.  He didn't wish to end there, however, and he soon invited his former colleagues -- Anaconda, Black Mamba, and Death Adder -- to join his new brainchild, the Serpent Society.

Business was booming for Sidewinder and his very successful idea.  He and his organization were hired by several big-named employers, but Sidewinder's success did not last.  After he initiated the fourth Serpent Squad, consisting of Black Racer, Fer-de-Lance, Puff Adder, and Copperhead into the Society, things went awry and the Viper took over his organization.  Feeling betrayed by those he had worked so hard to build a life for, he quit the super-villain business and felt that it was the only thing he could do.

After Diamondback's betrayal of the Society, Sidewinder did aid her, as she aided him during Viper's takeover.  However, he lacked sympathy for the girls who stuck by him, and left them to their own devices.  He soon returned to a life in crime after his daughter, Amelia, couldn't afford to pay for her medical bills.  He was imprisoned, but later let out, seen interviewed about his thoughts on the Thunderbolts.

Suggested Reading: Marvel Two-in-One #64-65, Captain America #310-311, 315, 319, 338, 341-345, Captain America Annual #10, New Thunderbolts #7