Satomi Hakase
Satomi wearing her engineering lab coat.
Biographical Information

Unknown, presumably Mahora, Japan


July 14, 1990



Physical Information







145cm (4' 9")


74cm - 54cm - 76cm
(29" - 21" - 30")

Hair Color


Eye Color


Blood Type


Family and Political Information

Class 3-A, Martian Droid Army

Satomi Hakase (葉加瀬 聡美, Hakase Satomi) is a character from the series Negima!: Magister Negi Magi by Ken Akamatsu and an antagonist and a protagonist in Kuro Arashi: The Black Storm. She is the 14th student on the class 3-A roster. She is the robotics expert. She is best friends with Chao Lingshen, and created Chachamaru Karakuri with her help.

Her nickname is Professor (博士, lit. expert or learned person), a play on her last name as it is also pronounced the same.

She and Chao enjoy testing her inventions on Ku Fei. She is also a member of the Robotics and Jet Propulsion Society of Mahora University and always asks the organization to provide her room for her experiments. Her great intelligence, obsession in her work, and somewhat lacking common sense, lead her classmates to refer to both her and Chao as mad scientists.

In her biography, she dislikes things that cannot be explained or scientifically proven, despite the fact that she is well aware of magic and uses it frequently in her work.


Class 3-AEdit

Main article: Class 3-A

Satomi featured very sparsly in the plot, often only to provide maintenence on Chachamaru.

Mages vs. MarsEdit

Main article: Mages vs. Mars

During the Mahora Festival, she aided Chao with her plan to reveal the existence of mages to the world. She is not seen during the time Negi Springfield and some of her classmates are trapped in the future. She reappeared on the third day of the festival as she and Chao prepare the spell to reveal magic to the world, though she appeared to be having second thoughts. At that point, Negi arrived to stop them.

Powers and AbilitiesEdit

  • Intellectual Ability: Her great intelligence, obsession in work, and somewhat lacking common sense, leads her classmates referring to her as a mad scientists along with Chao. She also has a very keen eye and among the class, she is one of the students who is aware of the existence of magic and uses it frequently, especially on her greatest achievement, Chachamaru. However, in her biography she dislikes things that cannot be explained or scientifically proven. She also determined that Chachamru was displaying human emotions.
  • Technological Genius: Satomi is the robotics expert and thus, one of the smartest members of the class. She is also a prominent member of the school's Robotics and Jet Propulsion Society. Is it implied she at least helped in the creation of Chachamaru. She has also upgraded Chachamaru's body with more human-like skin and a softer appearance.