Powerpuff Girls Doujinshi

Everything About Fiction You Never Wanted to Know.
Crossover Madness, thy name is PPGD

In 2004, a fanartist named Vinson Ngo, a.k.a Bleedman, somehow got it into his head to draw a Manga-styled Mega Crossover with every popular cartoon he could think of, recent and past, and blend them all together for a Fan Web Comic centered around the three superhero tykes known as The Powerpuff Girls.

The result was Powerpuff Girls Doujinshi (a.k.a. Powerpuff Girls D) which combines the universes of Cartoon Network and Nickelodeon as well as a few other outside sources and original material, and places them in a town called Megaville, a neighboring city of Townsville in this universe, where malevolent forces are poised to attack.

Be warned, though -- blood, death, and sexual themes are heavily featured, placing the characters in situations in which one wouldn't normally see them. The story itself is something of a Round Robin, heavily based on fan-input.

Gained a massive following on DeviantArt (see Ngo's profile page) and won 2005's Web Cartoonist's Choice Awards for Outstanding Character Art and Outstanding Superhero Comic. Around 2007, Ngo moved the comic from DA to Snafu-Comics. Updates have been sporadic but recently pretty steady due to Ngo also working on the crossover fancomic Grim Tales from Down Below and his original series Sugar Bits. He also said to have took on another Snafu member's project, Invader Zim: Manifest Doom though has yet to work on it. He's a busy man.

Tropes used in Powerpuff Girls Doujinshi include:

Samantha: For your friend, it'll be over quick. You however....
MIB: You say that, but I have the weirdest Deja Vu. (Buttercup blasts Samantha)
MIB: There it is.

Grim: Kids these days. They do the craziest things.

Mandy: Okay. If I'm bothering to be out here: the free food. Where is it?
Olga: Where's your boyfriend Billy?
Mandy: Dating your mom.