That OK KO crossover into the Nexus came out.
It is garbage. Utter garbage.
Essentially it is Garnet, Ben 10, KO and Raven from TTG runnign around the Cartoon NEtwork crossover town from the old CN bumpers, fighting some villain called Stryker. They reference all sort of CN characters being heroes who had been "eradicated" by Stryker and the entire thing is a mix of CN ego stroking itself, pissing on the legacy of far superior shows than the ones being the heroes in it and inconsistent animation.
I have seen "Cartoon Heroes to the Rescue" and I think that was a superior crossover to this garbage.