Reincarnation. A very interesting topic, to live once again. For Ozpin, this process was a bit of a burden. He would share a body with another soul and so on. But, another old soul had to be reborn and live life like a reset. They go on not remembering their past life, only living their present one, thus going by many names. Disclaimer : I do not own RWBY. RWBY and all its characters belong to rooster teeth.