@SavatoA chrysalid probably wouldn't work, because it would need to grow in his internal organs. Which he doesn't have. Furthermore, his body is made of a material more durable than most alien alloys. The outwards force of the growth would affect both the chrysalid larva and the body, and most likely crush the larvae before it could become a Chrysalid. And even if it did succeed, it would simply slow him down. His chest would explode outwards, but that'll just take him a minute to fix.
Everyone in DC has tried to control Doomsday. Brainiac psychically mind-controlled him, but then he became immune. Vision implanted his consciousness into the nervous system, but then he became immune. Superman lobotomized him, but he got better. Nothing can control him indefinitely, and anything that would kill him will only slow him down, and make him stronger.
However, I made Apocalypse more intelligent than Doomsday for a reason. He needed to be shown he could be overpowered, but he's willing to deal. Sure, he'll be a Wild Card ready to turn on the Ethereal at a moment's notice, but he'd probably agree to an alliance.