about his daughter, and raises her himself. Tom (now known as Black Tom) trains Theresa as his apprentice in his criminal activities. As a young teen, she accompanies him and his then-partner, the Juggernaut, to San Francisco. She takes the name Siryn, aids them in a vibranium theft, and battles the original Spider-Woman. Due to her inexperience, she performs poorly in battle and is defeated by Spider-Woman again during Black Tom's temporary capture. Initially believing her to be seriously hurt, Black Tom resolves to break all association with her so that she will not be exposed to further danger. While in custody, he absolves Theresa of all responsibility for her crimes, and writes a letter to Sean explaining who she is. The X-Men bring Theresa back to their headquarters, where she is joyfully reunited with her father. Muir Island Theresa moves to Muir Island, home of the research laboratories of Dr. Moira MacTaggert, a longtime ally of Professor Xavier. During an overnight visit to Xavier Institute, Siryn, Kitty Pryde, Illyana Rasputin, and a young Muir Island resident named Amp battle robotic duplicates of the Brotherhood of Evil Mutants after accidentally releasing them from the Danger Room. Later in the evening, Siryn gets into a fist fight with Kitty after Amp convinces her that Kitty was trying to sabotage her chances with a young man named Dimitri. After the fight is broken up by Wolverine, the girls reconcile and leave on friendly terms. She also accompanies Wolverine and Kitty when they are asked by Professor Xavier to act as bodyguards for the mutant pop-star Dazzler. Dazzler is impressed with Theresa's rendition of "Amazing Grace", that she asks the young mutant to act as a backing vocalist for her concert. On the island, Siryn starts a romantic relationship with Jamie Madrox. This version of Multiple Man is revealed to be one of his many duplicates and not the original Multiple Man, leading to the end of the relationship. During this time Siryn and Multiple Man travel to New York City. She and Madrox search for two members of the New Mutants: Sunspot and Warlock, who had run away from the school. Siryn and Multiple Man find Sunspot and meet the association of street-level mutants known as the Fallen Angels, and they are all transported to Devil Dinosaur's planet. They travel to the Coconut Grove, the home planet of the alien Ariel. While