First appearing in Batman #113 in a story called “The Superman of Planet X” the alien Tlano takes up the mantle of the Bat on a far away planet. In the Silver Age, The Batman of Zor-En-Arrh was a combination of Superman and Batman. He has many of Superman’s powers and grew up on a farm on his home planet.
In the origin story, the alien Batman summons Earth Batman to help him fight invading robots. Due to the different elements of the planet Bruce Wayne has “enhanced abilities” as well, and conveniently the two team up to defeat the robot force.
Modern incarnation of Zur-En-Arrh’s Batman is less fantastical. Batman hired a psychologist to under see him in an experiment of isolation, where a connection of the word “Zur-En-Arrh” as a miss hearing of Thomas Wayne’s last words, “…they’d probably put someone like Zorro in Arkham.” leads to an altered state Batman.
Personally, I like the more outlandish rendition of the character, which came back in an episode of Batman: Brave and the Bold, voiced by Kevin Conroy, I remember that being a fun episode, but that series is full of fun episodes.
If you were unfamiliar with this Batman, you would notice the two Batmen have different taste in costumes. Bruce Wayne’s Batman wears dark colors, sneaks around in shadow and uses fear against his enemies. The off-Earth Batman uses a brightly colored costume of mainly red and yellow with a purple cape, and doesn’t use shadow like Bruce. Of course the mind-crazed version of Zor-En-Arrh uses the gaudy colors as well, because he wants to attract attention. Maybe the modern version likes the color of Robin’s costume and wants a little of his own.
In any case, this version of Batman shows up a handful of times in Batman’s history and every time something crazy happens, whether it’s Bruce being teleported to a far away planet by a snooping alien needing a hand to stop robots, or a hypnotized and drug induced Bruce Wayne.
A Year of Batman 