Naomi has blue eyes and blond hair. She has a handmade hairclip with the same appearance as the one she gave Kasane when they were younger. Naomi's battle attire is unnamed.
BE AWARE! SPOILERS IN BOTH OF THESE PARAGRAPHS!
Naomi was shot during the mission to Suoh Line 9 (The Abandoned Subway) with a bullet that contained Other Particles. This turned Naomi into an Other of an unidentified type, hence why the Other kept the name Naomi Randall.
In Phase 9, after defeating Yuta and Kodama, a number of Togetsu Design Children will attack the group. Naomi and a number of human-origin Others agreed to fight to protect Kasane Platoon. Among those was Alice Ichijo. Unfortunately, every Other was killed, including Naomi.
Naomi's last words to Kasane were "I was here... to perform one final act of humanity. They made me this... but they couldn't take away... my soul... Thank you... Kasane... My sister... Live a long life... for both of us..."