After kidnapping Petra, Binder frees Jack to fight and kill Luther Strode if necessary. After a brutal fight Luther is subdued by Jack.
Jack The Ripper was on one of the "talented" killers throw the through history. However, Jack was unable to control his urges to kill and thus he was hunted by the Binder, who caught and bindbound him. Long time Much later he was released from his prison to stop and if necessary kill Luther with the promise that he will get to kill Petra if he succeeded. When Jack was finally able to stop Luther he admitted that now he can see why the Binder needed his help to stop Luther. With Luther stopped Jack was free to kill Petra.
Powers and Abilities:Jack Blitzing Luther
Superhuman Speed, Reflexes and Agility- Jack has proven himself to be significantly faster and more agile than Luther (Who himself has effortlessly moved faster than the eye can follow, speed blitzed multiple opponents and dodged Bullets). In his fight with Strode, Jack was able to easily evade and tag him for large portions of the battle. He was also able to use a rapid series of two fingered blows to finally defeat Luther at the end of the battle
Superhuman Healing Factor- Jack was able to heal from having his neck broken by Jack Luther almost instantly.
Superhuman Durability- Jack has shown the ability to take massive blunt trauma attacks that would kill/seriously injure non-powered humans with little to no discomfort. He was able to tank being smashed into concrete with enough force to make a massive crater, and recovered quickly.
Superhuman Strength- While probably not as strong as Luther, Jack has shown strength outside normal human limits. He easily broke Luther's arm in two places, despite the Luther's high level of Durability.
Advanced Combat Skills- Jack has shown himself to be a accomplished fighter especially with bladed weapons such as knives. He commented on Luther's lack of Skill and finesse, and is arguably the most skilled fighter to appear in the series to date.