Think of this character like Great Sage from That Time I Was Reincarnated as a Slime mixed with JARVIS from Ironman. She's a disembodied voice in Ainz's head that only he can hear, and acts as something of a guide and companion for Ainz, helping him access useful information, manage his equipment, etc, as well as simply be a shoulder to lean on, as she is the only entity in Nazarik who knows where Ainz really comes from.

Generally speaking, she is friendly, supportive, playful, sassy, and a little bit of a brat at times. That being said, she is capable of showing emotional vulnerability when the situation calls for it.

She usually talks in a kinda cutesy anime-girl style voice, often sounding like she's smiling, but does have the capability to sound mature and serious when need be.