Several months later, he is shown escaping from jail alongside many other superpowered criminals in an issue of "Thunderbolts". Kaine breaks out to try to stop Norman Osborn after finding out that he is still alive, has masterminded the Clone Saga, and killed his brother Ben. Kaine is seen tracking down and attacking Osborn's agents in southern Europe, leaving behind his signature "Mark". The incident is mentioned by one of Osborn's men, saying that there had been "difficulties with the one called Kaine, but we were able to persevere".