Crossover Nexus

Crossover Nexus is a crossover event between Ben 10, Teen Titans Go!, '''OK K.O.! Let's Be Heroes, and Steven Universe'''. It will air as an episode of OK K.O.! It is currently unknown whether this crossover will be canon to the Ben 10 series or not.

This episode takes place after the events of Innervasion Part 5: High Override according to Ben's timeline.

Plot
When KO finds himself trapped in a mysterious place, he encounters other Cartoon Network Heroes and they band together to escape.

Characters

 * Ben Tennyson
 * K.O.
 * Garnet
 * Raven
 * Rex Salazar (cameo, as statue)

Standard Aliens

 * Four Arms

Cartoon Characters

 * Jake the Dog (accidental transformation)
 * Prohyas Warrior (accidental transformation)
 * Robot Jones
 * Festro
 * Uncle Grandpa
 * Gumball Watterson
 * Mordecai
 * Edd
 * Wirt
 * Moxy
 * Grizzly Bear
 * Jeff Randell
 * Grim
 * Chowder
 * Captain K'nuckles
 * Monkey
 * Cow
 * Johnny Bravo
 * Buttercup
 * Dexter
 * Finn the Human

Villain

 * Strike

Trivia

 * This would be the sixth crossover event in the Ben 10 franchise.
 * Crossover Nexus was announced at San Diego Comic Con 2018.
 * This crossover indirectly connects the reboot back to the classic continuity, as Rex Salazar appears as a statue in this episode.
 * The setting for the crossover is CN City, which was featured in a series of bumpers from 2004 to 2007, which has been abandoned since 2007. Therefore, it looks like an abandoned city.
 * The themes for Cartoon Cartoons, CN City and NEW NEW NEW NEW can be heard.
 * Logos for Cartoon Cartoons, Cartoon Cartoon Fridays, Tickle U, Har Har Tharsdays and Yes! can be seen.
 * The current CN logo is used in the title card of the episode but instead of saying Cartoon Network, it now says Crossover Nexus.
 * When K.O. first heard Raven's voice thinking it was Ben's, he responded (as Four arms) "Dude, did that honestly sound like my voice to you", this is an inside joke as both Ben and Raven are voiced by Tara Strong.
 * This crossover aired prior to Innervasion Part 1: Message in a Boxcar in the US.
 * This episode is the first time Ben is shown to transform from one form to another by slamming his Omnitrix while transformed.
 * When Ben briefly turns into Buttercup, her design is that of the original show and not the reboot.
 * The music that is used when Strike summons K.O. is the same music used in The More Things Change: Part 1 when Khyber and Zed make their first appearance in Ben 10 Omniverse.
 * In the first teaser trailer, it appeared that Ben had the Omnitrix from season 1.