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Official Site: Marvel

Anaconda (Blanche Sitznski) is a supervillain in the Marvel Comics universe who was created by Mark Gruenwald and Ralph Macchio and first appeared in Marvel Two-in-One #64 in June 1980.

Blanche "Blondie" Sitznski was born in Pittsburgh, Pennsylvania. She worked as a steelworker until executives at the Roxxon Oil Company selected her to become a special agent in covert operations. She was already well adjusted to villainy, as she was the calisthenics instructor at Taskmaster's Academy. It was there that she trained several women in hand-to-hand combat, most notably Diamondback and Snapdragon. She was eventually taken to Roxxon's Mutagenic Laboratory and bioengineered by Roxxon's Mutagenics Division to have various permanent serpentine features. Her entire skeletal structure was laced with an artificial adamantium, giving her the ability to elongate her arms and legs, which she uses to constrict her enemies. She has also been surgically given gills, which allows her to breathe underwater. She has tiny scales on her face, neck, chest, and back, and small fins on her lower cheeks. Though Anaconda's trade characteristic is her blonde hair, she is actually a natural brunette. Anaconda loves to listen to show tunes, and is particularly fond of Thoroughly Modern Millie.

Her first mission as part of the second Serpent Squad grouped her with three other snake-themed villains: Sidewinder, Black Mamba, and Death Adder. They were given the task to retrieve the Serpent Crown for the Roxxon company president, Hugh Jones. During the mission, the group came into conflict with the Fantastic Four's Thing, Stingray and the Inhuman Triton. Anaconda jumped at the opportunity to battle the Thing, and was able to apprehend him with ease. They found the Serpent Crown, but the Thing and Triton retaliated, defeating Anaconda, Black Mamba and Death Adder, trapping them underwater.

Anaconda freed herself and her teammates from their underwater captivity using her brute strength, and they were sent on another mission—this time, to search for a powerful weapon known as the micro-scanner. After battling Iron Man, Anaconda and the others were defeated and presumably taken to prison. They somehow escaped, and sought out Sidewinder for payment from their first mission together. He gave them their money, plus more, inviting them to join his new criminal organization, the Serpent Society. Anaconda eagerly accepted the offer in hopes of earning a healthy sum of money. At the orientation, Sidewinder grouped Anaconda together with Cobra and the Rattler to perform an initiation test. Their job was to steal equipment from the bankrupt Brand Corporation. Constrictor, annoyed with the whole idea of the Serpent Society, spied on Anaconda's group and called the Avengers hotline to tip them off. Captain America showed up just as Anaconda and the others were pulling their heist, and Anaconda ordered Cobra and Rattler to return to Sidewinder with the apparatus. After an intense battle with the Avenger, Anaconda was able to wrap her arms around Captain America. She started to crush his bones, but one well-placed hit of his shield knocked her out, and she was taken to jail.

Anaconda (Blanche Sitznski) has not been a contender in any CBUB matches.