Here's a little OK-KO: Let's be Heroes!/Kamen-Rider Build crossover picture I did for fun.

The evil planet-destroying alien Evolto has found a way into the OK-KO: Let's be Heroes! universe and has joined forces with Lord Cowboy-Darrel, Professor-Venomous & Fink to continue his plans, so it's up to KO, Enid, Rad and the rest of the Lakewood-Plaza Turbo gang to stop the alien, before he destroys the world.