Kaguya Shinomiya

Kaguya is a fair-skinned young girl with long black hair that is always tied with a black-red ribbon (her hair appears to be mid-back length when she lets it down) with bangs or a lock of hair hanging down each side, red eyes, and a slim build.

Kaguya is a very cold and rational person
Kaguya does not consider herself a good person and as such has a longing for true goodness that borders on obsession.
Kaguya has a bad habit of immediately turning to money to solve her problems.
In general, he tends to address people in a formal manner.
Kaguya suffers from mood swings as a result of her upbringing, and the various moods have their own distinct pseudo-personalities that occasionally act out in her head in mental court cases, serving as a visual representation of her psyche.
When Kaguya becomes ill or incapacitated, her basic human desires go into overdrive as a result of her brain not being as functional as it usually is, causing her ego to be fundamentally dormant while her self takes over.