Originally Posted by
Ish
Pulled some Info from Alla since the update is teh gayz
Starting Loacation: Upper Jeuno
Starting NPC: Luto MewRilah
NPC Position: G-8
It involves talking to a lot of different NPCs in order to customize your NPC friend's features, like Race, Sex, Hairstyle, etc. Seems it's all done in Jeuno, and there are a lot of NPCs so your sidekick should be as customizable as initial character design for the most part.
The end of the quest comes via a fight in Eldieme Nec. through the G-8 entry where a little girl and your NPC is attacked by a Skeleton NM. Fairly easy NM it's said.
From there it's still up in the air, but I assume you'd be able to get the special Earring to summon your NPC at that point.