Ascension
The supposed ritual of ascension is a central concept in the Moon Children cult, wherein a Moonchild 'ascends' and becomes one with Luna, the cult's principal deity. Ascension is the utmost aim to be attained by a Moonchild. Despite the great importance of the act within the cult, not much is known about it, concretely. From what can be gleaned from circumstantial evidence, ascension can be surmised, mainly, as the death of the cultist, however this conclusion isn't exactly correct. Upon ascension, a cultist seemingly dies, however their 'being', as it were, persists through some unknown means. In recent times, almost all ascensions have resulted in the 'digitization' — the conversion of the person into code — of the ascendee, who is then being inserted into a Nintendo 64 cartridge of the 2000 video game Majora's Mask.
Description
Almost nothing is known about the actual mechanism of ascension aside from a few basic principles. Invariably, the ascendee must be dead before ascension can take place. There seems to be no veritable procedures for this part of the ritual, and it doesn't seem to matter how the ascendee actually becomes deceased — for example, Ben drowned, and Kelbris was electrocuted (although it is still uncertain if Kelbris actually ascended)
Why and how a person "survives" ascension is unknown, nor is it known what 'form' the ascendee persists as. Since Ben, ascended individuals have been digitized and inserted into a cartridge of Majora's Mask as code, wherein they are able to interact and interface with the game environment. It is known that Kelbris, regardless of if he truly ascended or not, was also inserted into the cartridge, where he became known as The Father. Since he had already been deceased and presumably ascended for over 5 years by this point, it is unknown what he manifested as in the interim period — and the same goes for any and all ascensions prior to Ben's.
Ascension apparently isn't necessarily voluntary, for example, Ifrit and Rosa were evidently ascended against their will. Even those who have already ascended have reservations about the issue, Nekko for instance is terrified and begs for his mother, and Duskworld23 comments that there is no peace after ascension and that he's been trying to 'kill' himself so that he doesn't become "lost".
Known ascensions
The following individuals are known to have been successfully ascended:
