Nickelodeon Animation Studio is an American animation studio owned and operated by Viacom through Nickelodeon. It has produced many animated television series, such as SpongeBob SquarePants, Rugrats, The Fairly OddParents, Invader Zim, Rocko's Modern Life, Hey Arnold!, The Adventures of Jimmy Neutron: Boy Genius, The Ren & Stimpy Show, Danny Phantom, Avatar: The Last Airbender, Teenage Mutant Ninja Turtles, and The Loud House, as well as programs for Nick Jr., Nicktoons, Nick at Nite, and TeenNick.