Like all transitions, his did not go as planned, sending him, Charon, and the rest of earth's population into Negation space. The process drove everyone, especially Charon, mad. Appolyon, ironically, was driven sane, and opposed Charon's plans of conquest. After Charon created his Lawbringers, Appolyon tried to hide from Charon .
Appolyon
Charon