battle_spirits character tags

Two character tags for the same character:

meganeko_(battle_spirits) and otonashi_fumiko

According to http://battle-spirits.wikia.com/wiki/Meganeko,
Meganeko is her alias and her real name is otonashi_fumiko. So which is preferred?

A dedicated wiki is a dubious authority--the "real name" could be something like exists with the Hetalia "human names", which aren't honored at all here. Without any knowledge of the series, I'll guess Danbooru would prefer the former since that's what the wiki page if nothing else actually refers to her as in the text.