Eventually, Jennifer decides that she is going to retain her She-Hulk form permanently—preferring the freedom, confidence, and assertiveness that it gave her compared to her more timorous and fragile "normal" form. After her brief solo career, she joined the Avengers. This led to her being transported to Battleworld by the Beyonder and her participation in the Secret Wars, most notable for sparking her long-standing rivalry with the newly empowered Titania. After the heroes returned to Earth, she temporarily replaced the Thing (who, having been repeatedly de-powered during the event, opted to stay in Battleworld for some time as a form of soul-searching) as a member of the Fantastic Four.