Without going into much detail, is the probability of a successful becoming determined by the immortal in charge of the particular becoming quest?

It just seems harsh that someone is going to put in over a hundred hours to a character and if the imm over-seeing them doesn't like them then you basically get denied.

If the imm-in-charge has a significant effect on it, it seems kind of #### to put someone through the quest only to deny them. On the other hand, it also seems ####ty that the immortal would really want you to succeed and then you get denied by the RNG.

While I'm here, has there been a mummy/vampire yet? I've seen a few lichs, but I'm not sure about mummy/vampire. If there's been any within the last year, could you name them? I'd like to buy their pbfs, or look up logs.