Cartoons Unite!

Cartoons Unite! is a crossover American animated series airing on Cartoon Nickelodeon Network.

Info
An evil threat arrives to destroy the multiverse, so Spongebob and Bugs Bunny work together to stop the threat.

Cartoon Network

 * Dexter, Dee Dee, Mandark, Dexter and Dee Dee's Mom and Dad, Monkey
 * Blossom, Bubbles, Buttercup, Professor Utonium, Mojo Jojo, HIM
 * Ed, Edd (Double D), Eddy, Kevin
 * Johnny Bravo
 * Cow, Chicken, The Red Guy
 * Weasel, Baboon
 * Samurai Jack, Aku
 * Courage, Murial, Eustace
 * Robot Jones
 * Numbah One, Numbah Two, Numbah Three, Numbah Four, Numbah Five
 * Grim Reaper, Mandy, Billy, Irwin
 * Hector Con Carne, Major Dr. Ghastly, Boskov
 * Mordecai, Rigby, Benson, Pops, Muscle Man, Hi-Five Ghost
 * Ben Teenyson, Gwen Tennyson, Maxwell Tennyson
 * Mac, Bloo, Wilt, Edurado, Coco, Frankie Foster
 * Yumi Yoshimura and Ami Onuki
 * Rodney J. Squirrel and Andy Johnson
 * Lazlo, Scoutmaster Lumpus, Raj, Clam
 * Chowder, Mung Daal
 * Flapjack, Captain K'nuckles, Bubbie
 * Agent Foxy, Pounce the Cat
 * Juniper Lee
 * Gumball Watterson, Darwin Watterson, Anais Watterson, Nichole Watterson, Richard Watterson, Penny Fitzgerald, Carrie Krueger, Banana Joe, Miss Simian
 * Steven Universe, Garnet, Pearl, Amethyst
 * Bigfoot, Alien, Nessie/Loch Ness Monster, Mothman, Chupacabra, Albino Bigfoot, Albino Nessie, Dr. Turbo, Angel the Bald Eagle, Dr. Sal, Layla the Hawk
 * Uncle Grandpa, Belly Bag, Mr. Gus, Pizza Steve, Giant Realistic Flying Tiger
 * Clarence, Jeff, Sumo
 * Billiam Williams, William Watterson
 * Grizzly, Panda, Ice Bear, Nom-Nom
 * Prohyas, Vambre, Grup
 * Eric McEdderson, Claire the Ghost, Brandon Hemperger, Michael Stedee, Emily McEdderson, Brittney Hemperger, Melissa, Brody Malo, Byron Devlin, Darcy Hari, Kevin Turpin, Mr. Williams, Rekah, Llamy the Llama
 * K.O.
 * Vincius, Tom

Warner Bros. Animation

 * Bugs Bunny, Daffy Duck, Porky Pig, Tweety, Sylvester the Cat, Lola Bunny, Yosemite Sam
 * Yakko Warner, Wakko Warner, Dot Warner
 * Pinky, The Brain
 * Dexter Douglas/Freakazoid
 * Collin the Speedy Boy, Flappy McFinger

Nickelodeon

 * SpongeBob SquarePants, Patrick Star, Squidward Tentacles, Eugene Krabs, Sandy Cheeks, Sheldon Plankton, Gary the Snail
 * Tommy Pickles, Chuckie Finster, Phil and Lil Deville, Angelica Pickles
 * Rocko Wallaby
 * Velocity, Elisha, Shunky
 * Ickis, Krumm, Oblina, The Gromble, Zimbo
 * Daggett Beaver, Norbert Beaver
 * CatDog, Winslow T. Oddfellow, The Greaser Dogs
 * Ren Hoek, Stimpy the Cat
 * Zim, GIR, Dib, Gaz, Professor Membrane, Mrs. Bitters
 * Timmy Turner, Wanda, Cosmo, Poof, Mr. and Mrs. Turner, Vicky
 * Jenny Wakeman/XJ-9

Episodes
List of Cartoons Unite! Episodes