| Larceny Lass
| Supervillain Information
Larceny Lass is the captivating kleptomaniac who tried in vain for years to steal Radioactive Man's heart.
When Radioactive Man and Fallout Boy were unable to stop a group of criminals robbing places in a high-speed jalopy, the pair of heroes traced the criminals back to Lars Henny Lasso Co., which turned out to be the hideout of Larceny Lass. Larceny Lass asked Radioactive Man out on a date, but he refused her. Larceny Lass then hit Radioactive Man with a solar ray, which weakened him, allowing her henchmen to beat him up. When Fallout Boy went to Radioactive Man's rescue, Larceny Lass escaped.
Radioactive Man later set up a rock concert to lure Larceny Lass' henchmen to him. Once they were there, Fallout Boy broke their jalopy and hid inside the engine compartment. When the henchmen opened the engine compartment, Fallout Boy jumped out and he and Radioactive Man defeated them. Fallout Boy then disguised himself as one of the henchmen and took the money from the concert to Larceny Lass. After he gave her the money, Fallout Boy destroyed the solar ray and Radioactive Man broke into the building and captured Larceny Lass.
Larceny Lass was one of the henchmen of Hypno Head, along with Jawbreaker. She and Jawbreaker captured Black Partridge whilst she was on her way to the peace gathering with Radioactive Man and Bleeding Heart. After Fallout Boy freed Radioactive Man and Bleeding Heart from Hypno Head, Black Partridge knocked Larceny Lass out.