Break the Cutie: He's been through a lot. Since the death of his caretaker, he has developed into a braver, more independent character, but there seemed to be no letting go of the natural innocence that came with his youth.
The Cutie: His naivete and childish determination is absolutely endearing.
Determinator: During the walrus battle, not only does Toboe Go for the Eye and actually hurt the beast, but despite all the walrus' thrashing, despite the walrus diving into the freezing water and smashing through giant ice floes to try to dislodge him, Toboe does not let go until the walrus dies.
Determinator: Even when poisoned, he still nearly succeeds in ending the world.
Duality Motif: He has one blue eye and one golden wolf's eye, to show that he's found a way to turn himself into a wolf so that he can enter the Paradise forbidden to humans. Fortunately his plan is thwarted by Kiba and Cheza, but his evil wolf eye lives on...
The Juggernaut: The destruction of his Fortress, being impaled by a poinsoned sword, being shot at point blank and being viciously mauled the protagonists. None of this killed him. Only when he tried to enter in Paraside that he meet his death.
Jumping Off the Slippery Slope: After his lover's death, he becomes extremally mentally unstable and, by the end of the series, he doesn't give a damn to anything other than himself.