Something I came up with after watching a certain movie. I also think it could help spice up the movie just a bit

Narrators point of view

Adams body remained exactly where Juliet and izuku defeated him, or at least what was left of him after he was driven out and the ride was stopped. The zombies came back in and he stepped on his dead flesh.

He was now have eaten and rotting from the inside man, driven by madness and delusion brought down by a bunch of teenagers. Of course that would be the case if it was any other psychopath, but this was a psychopath that was in a zombie apocalypse, but also had a powerful lunatic running loose.

With a bit of magic, Adams body reanimated itself. He was still half eaten and rotten from the inside. However, he's laughter returned, but this time it was more daemonic and it seemed to be the only thing he was capable of doing. His jawline was still dislocated, showing a massive hole of rotting flesh, keeping his jaw barely together.

Adam looked around and slowly picked up his remaining chains are used to cut him open

The person responsible for his resurrection looked at him: you just wanted to make everyone happy, but they stopped you and now look at you. Nobody is going to laugh with you now they're all be horrified

Adam turned his head away, trying to hide is rotten start with little success. only a few grunts and a bit of sad laughter left his rotting mouth

The necromancer continued: but now you have a second chance to make everyone laugh again, only this time it will be against their. Will. I have given me the ability to make people laugh uncontrollably until they die. Isn't that what you wanted to make people laugh until they fell dead

Adams, half expression change from depression to enjoyment as he clapped his hands as if he was a child that just received his favourite cookie: I know that's what you want, but before you go and make the world laugh collect drops, you need to get rid of the people who killed you first otherwise they'll just stop you all over again

Adam nodded as he chuckled is demonic. His Laugh echoed about the zombie hordes that no longer attacked him. Instead, they saw him as one of them,  and to his surprise, some of the zombies started laughing with him

The necromancer: Oh, I forgot to mention the zombies or at least a few of them will be your helper is in this little performance you want put on. However, it looks like you can only control 10 at a time so I will advise you to use that sparingly you can't create an Army, but enough about that go on your audience awaits!

The zombie clown nodded as he and his small little troop ran off in another direction, laughing the whole way

The necromancer smiled to himself: this will be one hell of a performance