Iris is tall, has big scary eyes that are really dark, and her hair is long and dark and messy all the time. Her skin is unhealthily pale in a "needs to spend more time in the sun" kind of way. She has dark circles under her eyes as she does not sleep.
Divinity (Anima) Kali
If you look at Kali out of the corner of your eye, she is 8 feet tall, skin shimmering with the depth of space. She is humanoid in that she has arms, but has four of them. One is holding a sickle, one a trident, one a severed head, and the other a skull cup collecting blood from the severed head.
If you look at her directly however Kali appears as a kind of swirly vortex with tendrils holding the same items.
Iris is terrified of death, doing everything in her power to learn about the ways people can die, and avoid them. As a result she hates potentially deadly things including but not limited to storms, germs and rodents. She also hates mirrors although has not elaborated on why. She rarely leaves her dorm room and so very few students recognise her face, but everyone knows OF her as the person constantly sending emails, complaints, and pamphlets about dangers on campus.
Throughout season 1, her relationship with the other god kids, Kali, and the various battles with the Phantom Queen have helped or forced Iris to push her boundaries. She's not necessarily less scared or convinced things will kill her, but keeps going outside her comfort zone all the same, something which her new friend Nanako has said she admires as being very brave.
Iris is known by other students for trying to hand out pamphlets on Ways You Can Die and for occasional hysterical screaming.
Iris' parents are quite distant, spending most of their time travelling the world and occasionally sending Iris letters or postcards which they sign off using their full names Victor and Lorraine Snow rather than Mom and Dad.