Planet-X Batman with Bat-Mite (Batman Unlimited)
"Planet-X Batman and Bat-Mite are both living proof that the influence of Batman's quest for justice reaches far beyond Gotham City. While they differ greatly in size and origin, both were inspired to don Dark Knight inspired costumes as masked heroes after observing Batman's crime fighting styles from afar. Planet-X Batman, a native to the distant world Zur-En-Arrh, has prior experience successfully teaming up with the Caped Crusader, while the mischievous and fifth-dimensional Bat-Mite has been known to be more of a nuisance than an aid.
Batman is 6.75"" tall and Bat-Mite is 3"" tall."