Sequels
For deliberately failing in his mission Dredd himself had to be judged, in the story's epilogue Block War in prog 182. This story introduced another major character, Judge McGruder, who thought that Dredd had exceeded his authority.
In a sequel called Destiny's Angels, the Judge Child was executed for attempting to assassinate Dredd in revenge for depriving him of the opportunity to rule Mega-City One. In McGruder's eyes this vindicated Dredd's earlier judgement of him, and she authorised the execution herself.
Owen Krysler was reincarnated in City of the Damned, this time as a deformed but much more powerful telepath called The Mutant.
Read more about this topic: The Judge Child