Why are the Fairly OddParents hanging out with Danny Phantom? Today, Nickelodeon released a new animated short featuring characters from The Fairly OddParents, Danny Phantom, and TUFF Puppy.

All three shows were created by Butch Hartman, whose new series Bunsen is a Beast premieres today, February 21st, at 5:30 p.m. ET/PT. The animated series tells the “story of Bunsen and Mikey–two new friends who embark on endless fun and adventures in their town of Muckledunk.”

Watch the Nickelodeon animated short, The Fairly Odd Phantom, below:

BURBANK, Calif. – (Tuesday, Feb. 21) – Worlds and characters collide in The Fairly Odd Phantom, an original animated short featuring an ensemble cast of characters from the Nickelodeon animated series created by Butch Hartman: The Fairly OddParents, Danny Phantom, T.U.F.F Puppy and the brand-new Bunsen is a Beast. The short, which marks the first-time these popular characters have ever been featured together, is now available across Nick.com, Facebook, and Nick’s YouTube page. Hartman’s latest series, Bunsen is a Beast, premieres today, Feb. 21, at 5:30p.m. (ET/PT) on Nickelodeon, telling the story of Bunsen and Mikey–two new friends who embark on endless fun and adventures in their town of Muckledunk.

In The Fairly Odd Phantom, Danny Phantom and friends capture escaped ghosts in their lab, Fenton Works, but their mission quickly goes awry when secret agent Dudley Puppy messes with the control panel. Soon after, Wanda, Cosmo and Timmy end up in the lab instead of Fairy World, where they are all met by a very different newcomer, Bunsen.

For over 18 years, Hartman has created hit series for Nickelodeon, including The Fairly OddParents, Danny Phantom and T.U.F.F. Puppy, with his brand-new series, Bunsen is a Beast debuting today. As part of Nickelodeon’s continued celebration of its rich animation history, Hartman combined his pantheon of iconic characters into one comedic short.

On Feb. 24, Danny Phantom voice cast members, David Kaufman, Grey Griffin, Rickey D’Shon Collins, and Colleen O’Shaughnessy, will appear on a brand-new episode of the toon-talking Nickelodeon Animation Podcast, which gives voice to the creators and talent who bring to life some of the most innovative, hilarious, and heart-tugging animation in the history of television. Episodes are available on iTunes, YouTube, SoundCloud and nickanimationpodcast.com.

The Fairly OddParents (10 seasons), which debuted in 2001, follows Cosmo and Wanda, husband-and-wife fairies, as they wreak havoc and help their godson Timmy overcome typical kid obstacles by granting him wishes.

Danny Phantom (3 seasons), which bowed in 2004, charts the adventures of 14-year-old Danny Fenton, who becomes half-ghost, “Danny Phantom.” Now with paranormal powers, he’s responsible for capturing the ghosts and monsters that roam the Earth.

T.U.F.F. Puppy (3 seasons) debuted in October 2010 and showcases a gung-ho, dim-witted dog named Dudley Puppy who finds himself accidentally thrust into the role of secret agent.

Visit Nick.com, Facebook, Instagram and the Nick App to learn more about Bunsen is a Beast. Full-length episodes are currently available on Nick.com, Nick On Demand, and the Nick App, available for download on iOS, Apple TV, Roku, Android, and Android TV.

Hartman began his animation career as an assistant animator on An American Tail. He created his own shorts for What a Cartoon!, and also wrote and directed episodes of Dexter’s Laboratory, Cow & Chicken and Johnny Bravo. Bunsen is a Beast marks Hartman’s fourth animated series for Nickelodeon. Hartman joined Nickelodeon in 1998 where he created and produced several cartoon shorts for the Oh Yeah! Cartoons series, including The Fairly OddParents. Commemorating the 10th anniversary of the animated series, Hartman brought the series to life in the 2010 live-action/CG animated hit TV movie, A Fairly Odd Movie: Grow Up, Timmy Turner! The series came to life once again in the original TV movie, A Fairly Odd Christmas in 2012 and A Fairly Odd Summer in 2014. Hartman is also the creator of Nickelodeon’s animated series Danny Phantom and T.U.F.F. Puppy.”

What do you think? Are you a fan of The Fairly OddParents, Danny Phantom, and/or TUFF Puppy? Will you watch Bunsen is a Beast?