Yeah, I can see how that would be confusing.
That is a xenogender.
Xenogenders are when your gender is related to more of like a concept rather than what is in seen in the western society like masculine and feminine or neutral.
That one specifically is a -charic, which means that somebody’s gender identity feels like it relates to that character, or is similar to the things that were listed on the page, like feeling ominous.
They don’t genuinely believe themselves to /be/ that character, they just feel like their gender identity /feels/ like that character.