Jimmy displays other powers, such as super-speed. He also has the ability to project spines from his body, but the powers manifest themselves at irregular intervals. Jimmy witnesses the death of the New God Lightray, and dreams of being trapped in the Source Wall. He meets a former minion of Darkseid named Sleez, who is killed before he can reveal anything, although he hears the words "So begins the end." Jimmy resolves to use his new powers to become a superhero and designs a costume and calls himself Mr. Action. He revels in his new popularity, and decides to join the Teen Titans. Titans’ leader Robin begs him to reconsider, as his powers only manifest when he is in danger. Jimmy confronts Clark Kent and reveals he knows Clark is Superman: he pulls away Clark's shirt to reveal Superman's costume. Jimmy tries out for membership in the Justice League, but is deflated when his powers do not manifest.