Volcana (Marsha Rosenberg) is a fictional character (a supervillainess turned superheroine) appearing in American comic books published by Marvel Comics. The character first appeared in Secret Wars #3 (July 1984). She was created by Jim Shooter and Mike Zeck. Fictional character biography Marsha Rosenberg was born in Denver, Colorado. She was a day care center employee who, along with her friend Skeeter, was among the residents of Denver transported to the Beyonder's "Battleworld" during Marvel Comics' first Secret Wars limited series. Seeking power and respect, she and Skeeter agreed to serve Doctor Doom in exchange for super powers. Doctor Doom had learned how to operate a machine utilizing alien technology. He used it to grant Rosenberg the ability to transform into a molten lava form with powerful thermal energy blasts, hence her codename "Volcana". She allied herself with Doctor Doom and the criminal faction and battled the She-Hulk in a confrontation with the heroic faction. During the series, she developed a relationship with the supervillain Molecule Man, Owen Reece. She bargained with the Enchantress, and then battled the Enchantress with the intent to renege on her bargain. During the Secret Wars II limited series, Marsha was residing back on Earth with Owen Reece. They hosted the Beyonder upon his arrival on Earth. She tricked the Molecule Man into challenging the Beyonder and then participated in the defeat of the Beyonder. Some time later she accompanied the Molecule Man and the Fantastic Four to the Beyonder's universe. She separated from the Molecule Man when he apparently became irrevocably merged into another "cosmic cube" along with the Beyonder. Unlike her friend Skeeter who became the supervillainess Titania, Marsha did some superhero work. She battled the Wizard and Moonstone. Volcana assisted the Avengers in repairing the damage to the Earth's crust caused by the Beyonder. Volcana later took a comatose Molecule Man to the army hospital. After Molecule Man recovered, he turned the tent they were in into a hot air balloon as Captain Marvel's hologram wanted to talk. Volcana destroyed the projection. Because of the Silver Surfer, Volcana and Molecule Man were redirected to the Avengers and the Fantastic Four. After a brief fight, Molecule Man and Volcana were allowed to return to their apartment in Denver. Later, she was briefly reunited with a de-powered Molecule Man (who had mysteriously returned to Earth) and battled Klaw. It was at that time that