Red King (Ep 2), EX Eleking (Ep 3), EX Red King (Ep 5), EX Gomora (Ep 6), Geronimon (Ep 9 + 50 MP).
Chaos Waroga (Ep 11), Chaosroids S/T/U (Ep 12 + MP requirements), Neo Chaos Darkness (Ep 13 + 80 MP), EX Tyrant II (Ep 18 + 70 MP).
Most characters in Rebirth are tied to the completion of specific story episodes. Some also require a minimum number of , which are earned by completing sub-objectives within those levels.