Protagonist of Oni (game) has 2 character tags

Konoko and Hasegawa Mai share the same character.

https://oni.fandom.com/wiki/Mai_Hasegawa

What should be done?

You can create a request to alias the less popular name to the more popular name.

Samsara_Kama said:

You can create a request to alias the less popular name to the more popular name.

I wasn’t sure what the best course of action was, like if somebody wanted to add a suffix to konoko or something.

I'd say konoko doesn't currently need to be deprecated/marked as ambiguous, because the only tags it's likely to get mixed up with (konokono and konoko (artist)) have even fewer posts than it does and those posts are ancient, but it wouldn't hurt to make the character tag "konoko_(oni)" for futureproofing in case some popular thing suddenly introduces a character named Konoko.

IMO alias them both to konoko_(oni) and leave the aliases in place for now.

BUR #25514 is pending approval.

create alias konoko -> konoko_(oni)
create alias hasegawa_mai -> konoko_(oni)

as above

normally we'd prefer full names, but it seems from what I see that she's generally called by her codename by fans and in game