What happens when the Dark Knight and Aqua Man show up to the residents of Bikini Bottom and their parodies of Mermaid Man and Barnacle Boy? And what happens when Spongebob accidently takes the Black Manta's hi tech submarine for a wild ride?

Eggman is prepared to unleash his latest invention against a certain blue hedgehog, so why not make the design after the Dark Knight as the most powerful weapon on the planet?

Baby Face and a group of villains are plotting to ruin Christmas for Gotham...Bat-Mite ends up having the Dark Knight team up with the Grinch himself to stop Gotham's villains.

The Riddler is up to his old tricks with the Dark Knight, except he has a trick up his sleeve, by sending himself along with Batman and his canine companion Ace to the Land of Ooo to face so many uncertainties.

Batman suspects that FutureTech might be arming some of his arch enemies with their hi-tech weapons, with the help of the Question, Superman and the Blue Beatle, he hopes to find the answers.

Owlman has teamed up with Skullmaster to trick Max into handing over his cap, but Owlman will have to gain his trust first, with the real Batman in a major distraction thanks to Skullmaster.

What happens when the Dark Knight finds himself in a situation to face Jigsaw's puzzles, where he has to free Gotham's most wanted villains who are his ironic victims? Add Jason Voorheeres birthday, and it will certainly be a lucky day.

What happens when Owlman tries to escape back to his own world, and accidently let's in Azula from the Avatar world? He'd have no other choice but to work with the Dark Knight and Mr. Freeze.

The Mighty Heroes, badly in need of it, are trained by Wildcat.

The Bagges have decided to vacation in Gotham of all places...what happens when the Joker kidnaps Muriel and steals Eustace's favorite chair he brings along? Will the Dark Knight help out?

Eggman has trapped Sonic, Shadow, Knuckles, Tails and Rogue in a scheme to turn them all into WereAnimals, along with also having the Batman join in as a WereManBat!

Batman and Robin greet visiting superheroes The Green Hornet and Kato when they pursue Firefly together. Inspired from the memorable 1960s "Batman"/"The Green Hornet" crossover.

The Ministry of Magic now under control of Lord Voldemort has set its sights on the Dark Knight and any rogue muggles that get in their way...little do they know it might be more than they can handle.

What happens when there is a prison break instigated by Ember McLain, Batman is forced to fight some of Gotham's most wanted villains. But Poison Ivy who has teamed up with Undergrowth have sinister plans for Amity Park.

A week after Buddy's marriage, a cousin of his makes an unexpected appearance. Synlet oneshot. Rated T just in case.

It seems Harry Potter believes a muggle known as the Batman in Gotham have a similar background...but in order to travel to Gotham he along with Hermonie and Ron have to travel by cargo. Oh, and the Death Eaters are following suit.

Betty Quinlan is Missing, and children are being turned into human balloons! Only Jimmy Neutron has to summon a Caped Crusader to save Betty and the children from a sinister balloon vendor! Inspired by a DA Comic. Contains JxB Moments.

In an effort to finally end the debate on who is better the Turtle Titan or the Nightwatcher, Donatello helps Master Splinter to hire the Batman to solve this. But would it be worth it facing a certain Joker?

Gentleman Ghost is fed up with the Dark Knight hovering over his shoulders so he's hired Skulker to hunt down Batman, and made friends with the Fright Knight, Technus and Nocturne. It's going to take more than Nth metal to take down these ghouls.

Crossover with Jackie Chan Adventures. A rogue Chinese General has hired a certain Floyd Lawton a.k.a. Deadshot, to do a hit on a rising moderate government offical. The problem? Floyd has to deal with Jackie Chan and the Batman for starters.

Crossover with Secret Saturdays. Aquaman wants the Batman to tag along in protecting what seem like to be supposedly extinct shark species. Yet V. V. Argost's ally Leonidas van Rook has other ideas.