Sylbert Rundine is a
rapist and
serial killer who preys on the dormitories of Ivy University. In his first appearance, he acquires a Bio-Belt similar to the one worn by college professor Ryan Choi and becomes the super-villain Dwarfstar. He aged due to a forced stay in a time-accelerated micro-universe, leaving him even more mentally unhinged than before. He vanished along with
Chronos and
Lady Chronos. A master assassin as well as the shrinking nemesis of Atom, Dwarfstar is a constant thorn in Ryan's side during his tenure as Atom. The two men were actually connected in ways they were unaware of. A woman from Ryan's past was the reason that both men gained their shrinking belts, though Ryan was deceived to believe it was from
Ray Palmer himself. The woman, Jia, who was a former flame of Ryan's, would later turn to a life of crime and become Lady Chronos. Dwarfstar hired
Deathstroke and his group of mercenaries, who called themselves Titans, to kill his nemesis Ryan Choi, a physics professor and costumed hero known as the Atom. Deathstroke along with
Cheshire,
Tattooed Man, Cinder, and
Osiris carried out the sadistic mission. After a confrontation at Ryan's home, he is beaten and stabbed to death. Dwarfstar meets Deathstroke the next morning and is given Ryan's corpse. Shortly after Ryan's death, Dwarfstar joins
Bane's gang, the
Secret Six. A short time later,
Giganta invites Dwarfstar to her hotel room, where she attempts to seduce him. Giganta had been in a relationship with Ryan Choi; after learning that Dwarfstar had a hand in his death, Giganta proceeds to beat and torture him. Ray Palmer discovers evidence that Dwarfstar had a hand in Ryan's death, and vows to find him and make him pay. Ray eventually finds Dwarfstar in a hospital, where he is recovering from the injuries he sustained from his torture at the hands of Giganta. Believing it may lead to a lighter sentence, Dwarfstar confesses to hiring Deathstroke to kill Ryan. ==Powers and abilities==