Can doomsday truly be killed

I got questions about doomsday first can he truly be killed example if he were to meet black bolt and black bolt yelled and destroyed doomsday would doomsday comeback and be immune to black bolts voice or if he met harry potter then harry used the kill curse would doomsday comeback from that second how did doomsday get his adapted ability third can doomsday’s adapted ability be copied like if he met mimic can mimic copy his adapted ability ?

I got one what if someone like Barry Allen were to go back and stop Bertron from making Doomsday then in the present doomsday would fade out of existence would he still comeback from that

@kid_omega_prime: He died back then. If they would've stopped reviving him he would've stayed in the ground

I think originally the only thing that would keep Doomsday down permanently was Entropy.
The only reason he came back is because someone went and got him.
Might still be that way.

No, if Smallville and Batman vs Superman couldn’t do it, nothing can.

He can easily be killed by plot device. Then returned again by another plot device. Which has happened in the past.

Not if you go with the Hunter/Prey Doomsday, that one could only be stopped by dropping him off at the end of time or trapping him in a teleportation loop where he was never more than 25% completed.

imo doomsday should not be that big of a threat. everyone fights him like an idiot. no one bfr's him at all. supposedly he always comes back. where does doomsday come from after he is killed. does he just respawn like a video game character? i don't get doomsday. he is just a walking pis plot device. what happens if superman just flew him to another galaxy and leaves him?

Yes. You bring a reality warper and snap him out of existence.

Of course

@all-father: Wasn't Imperiex a reality warper?

Comic book Doomsday can be killed. However, DCEU Doomsday cannot. He will adapt to death and one shot.

Ofcourse he can

Imperiex permanently killed the orginal Doomsday I believe.