Humanoidverse/CrossMore: Blythe X, Pines Y, Ninja Z: A Dimensional Caper

 is an upcoming crossover animated miniseries event featuring Hasbro's Littlest Pet Shop: Blythe X, and Disney's CrossMore: The Series, both co-developed by Aaron Montalvo.

It is a crossover between the CrossMore universe's Gravity Falls and Randy Cunningham: 9th Grade Ninja characters, the television series of the same name's characters and two Marvel Comics characters, and during the event, a brief crossover of the two with Grey's Anatomy. Two episodes will be from the side of BX produced by Hasbro's eOne Animation, while the following two episodes will be from the side of CrossMore produced by Disney Television Animation.

Both eOne and Disney will co-operate with Hollowfox on all episodes, marking the second collab between Disney and eOne since PJ Masks.

The series is directed by Yoshihiro Miyajima (Darling in the Franxx episode director) and Shaun Cashman at Titmouse and Studio Trigger with Ki-Hyun Ryu as a directorial supervisor. Montalvo, Bill Oakley, Josh Weinstein, Kevin Burke, Chris Wyatt, and Shannon Eric Denton will write all episodes. The character concept designers will be fanartist ironghast and Kora Kosicka. It will feature live-action scenes directed by Kevin McKidd.

The special is aired in four parts on December 18, 2020. The special is rated TV-MA. This is the second in a four-installment based event specials of crossovers between Disney and Hasbro as similar to Arrowverse's crossover events such as "Crisis on Infinite Earths".

About the Event
During the development of CrossMore, a crossover between the Humanoidverse and CrossMore is planned by making a new arc of special events animated by Trigger and Titmouse.

Months after the release of the ECS/CrossMore crossover special, it has been announced that a second one based on Blythe X and the CrossMore side of Gravity Falls and Randy Cunningham: 9th Grade Ninja is coming in December of 2020.

The cast of both shows (alongside Josh Keaton as Iron Man/Tony Stark and Zach Callison as Peter Parker/Spider-Man from Avengers: Hero Morphs) are set to reprise their roles with Leslie Odom Jr. set to voice a new character while Ellen Pompeo and Chandra Wilson is set to have a special live-action appearance. The special will be directed by Shaun Cashman and Yoshihiro Miyajima at Trigger and Titmouse with Ki-Hyun Ryu as directorial supervisor and writing by Bill Oakley, Josh Weinstein, Kevin Burke, Chris Wyatt and Shannon Eric Denton.

Amid eOne absorbing Allspark, replacing it as the current production studio behind adaptations based on Hasbro IPs, and the idea of other eOne brands being owned by Hasbro, there will be live-action scenes with Ellen Pompeo and Chandra Wilson appearing, revealing to be a live-action/animated Grey's Anatomy crossover cameo with CrossMore and Blythe X.

Premise
A thief's certain spell has turned Dipper and Randy into cute little pets, taken into the Littlest Pet Shop. When Blythe met the two, it was an unexpected turn of events when she found out, they were humans! Eventually, she encounters Dipper's twin sister, Mabel and their friends, as well as Hero Morphs Avengers, Tony Stark, and Peter Parker.

Together, with the notion that the new Journal and the Ninjanomicon are stolen by a dimensional jumping elusive entity, they will work together to hop into dimensions and steal them back.