Not much is known about the newest hero to acquire the name of Judomaster. Her father, Yoshio Sato, was the last and best of the traditional assassins employed by the Yakuza of Japan. Her father tried to leave the Yakuza when he discovered Sonia was his daughter. He was eventually killed by the Blood Soldiers (super-powered villains employed by the Yakuza).
Sonia Sato was created by Gail Simone. Her first appearance is Birds of Prey #100.
Sonia adopted the Judomaster identity to repent for her father’s past deeds and has since been on the run from the Blood Soldiers. She first sought the help of Oracle, who she agreed to help out with a mission for the Birds of Prey. When the Blood Soldiers found her the Justice Society of America stepped in to help. The Blood Soldiers were defeated as Tiger watched on the sidelines. Sonia was placed in the JSA care where she has remained.
Major Story Arcs
During Gog arch, Sonia initially was on Gog´s side, but when the JSA discover the truth, she fights against him. After Gog is defeated all the gifts he gave to the various JSA members were taken from them including the restoration of Damage's face. He once again sunk into despair until Sonia removed his mask and kissed him, showing that she cared about the man inside, not outside. The two began dating afterwords. Sonia joins the All-Stars when the JSA divide. During Blackest night, Sonia and Atom Smasher found Black Lantern Damage, who tells them that he wants to destroy the Black Lanterns because he doesn't want to suffer. It was revealed to be a trick to revive Black Lantern Kal-L again.
After Blackest Night, a depressed Sonia decided to came back with her objective to kill White Tiger, who killed her father. She was about to kill him when KIng Chimera appear and show her a video made by Damage where he tell her that he knew that he would die in the Blackes Night. He told her to live happy and never forget all the time that they spend together. Judomaster decided to only defeat White Tiger in combat, steal a payment for a murder and use it to help the people of Georgia who were hurt after Damage's manifestation of powers.
On Earth-22, an emaciated Parasite, whose flesh is showing his musculature, is pursued through Kansas by Magog and his Justice Battalion (between them there was Sonia Sato). Parasite, desperate to escape his pursuers, tears through Captain Atom's shell, causing a nuclear explosion that destroyed most of the midwest and kills both he and the Justice Battalion, save Magog and metal-man Alloy.
Skills and Abilities
Sonia appears to be highly skilled in the martial arts. She does possess an ability that allows her to never be hit. She projects a shield around her that throws her opponents aim off. However, she can’t stop an attack that’s not focused directly at her.