Action Comics, Vol. 1 #861A

Superman and the Legion of Super-Heroes, Chapter 4: Chameleons
The real reason Brainiac 5 set himself up as dictator of Colu is revealed, and it's not a pleasant one. Thankfully, the Legion has a spy in the Justice League, but with Earth Man stealing telepathic powers, that doesn't last long, and all timetables are moved into high gear.
Release Date: 2008