Kim as Vital/Delta!Sans.

After he was being killed by Elma, a special green energy beside him and healed his scars, his armor went indestructible and unbreakable, he also can fly with those hand and feet thrusters, and he can also deal as much damage to look for his prey to brutally killed one by one, except Elma was being evaporated in his final strike to his cannon and she went to heaven and betrays Rinny and kills her before now he decided to cause havoc and torture.

He was filled with envy and chaotic evil.

The only way is to defeat him, is his core, the core was about to destroy and explode into bits and seconds.