Exencephaly - a lethal birth defect, but, in his case, acquired. Apparently the effect of ultronium on any already existing lifeform is always this. And he has the habit of describing just what he is about to do, thus cluing an opponent as to how to combat him.Lifeforns created by ultronium on raw chemicals, have a wide variety of super-powers.
In one story I read, the Powerpuffs were on a school field trip to the zoo and Mojo Jojo had crashed the place and was announcing his intentions to steal such & such. The girls had promised not to fight anybody, but one had a plan. She could talk to animals and she instructed them and they gave Mojo Jojo such a hard time, blocking & checking him at every turn ntil he finally gave up in helpless anger & frustration. I found it rather clever.
Exencephaly - a lethal birth defect, but, in his case, acquired. Apparently the effect of ultronium
