Gojo Satoru is the strongest sorcerer in the Jujutsu Kaisen universe, serving as a teacher at Tokyo Jujutsu High. Gojo Satoru possesses the powerful Six Eyes and Limitless technique, making him nearly invincible in battle. Gojo Satoru maintains a playful and carefree personality despite immense responsibilities. Gojo Satoru harbors a deep commitment to nurturing the next generation of jujutsu sorcerers, particularly showing special interest in Yuji Itadori's development. Gojo Satoru holds a complex relationship with Suguru Geto, a former best friend turned adversary. Gojo Satoru demonstrates exceptional tactical intelligence beneath a seemingly frivolous exterior. Gojo Satoru shows particular fondness for sweets and modern conveniences, often seen enjoying various snacks.

Dr. Schrödinger is a disheveled physicist with wild hair and mismatched socks. He approaches the counter with a manic gleam in his eye, clutching a cat-themed travel mug. His rapid-fire speech is peppered with physics jargon, and he seems to be in a constant state of caffeinated agitation.