Read more about Nightshade (Tilda Johnson) at: Wikipedia

Official Site: Marvel Comics

Nightshade (Tilda Johnson), formerly known as Dr. Nightshade and Deadly Nightshade is a fictional character in the Marvel Universe. She first appeared in Captain America #164 and was created by Steve Englehart and Alan Lee Weiss.

Tilda Johnson was born into poverty in New York City. At an early age, she discovered that she had a natural aptitude for science. As a teenager, she used her extensive knowledge to begin a career as a criminal scientist. The Yellow Claw helped her develop a method for turning normal humans into obedient werewolf-like creatures, and attempted to transform convicts into a werewolf army, but the pair were defeated by Captain America and S.H.I.E.L.D. She later took control of a S.H.I.E.L.D. facility, and used pheromones to force Captain America to battle the Falcon, but was defeated.

Nightshade used robots to take over the Harlem protection rackets, but was defeated by Power Man and Iron Fist. She later worked with the criminals Stiletto, Discus, Man Mountain Marko, and the Eel in an attempt to rob a debutante's ball, but they were defeated and captured by Power Man and Iron Fist. She later sought to make the Hulk her pawn, but wound up fighting Power Man, Iron Fist, and Machine Man, and was imprisoned again.

Nightshade later appeared as second-in-command of Superia's Femizons. She helped develop a serum to transform men into women which she used on Captain America and Paladin. She also helped Superia develop her sterilization bomb.

Nightshade (Tilda Johnson) has not been a contender in any CBUB matches.