瀬乃宮 みさ希

Misaki Senomiya is a scientist who works as a spokesperson for the company EXOSKELETON and the estranged older sister of Akiho Senomiya, as well as an old friend of Kaito Yashio. She founded the Tanegashima High Robotics Club and started building Gunbuild-1, which Akiho was determined to complete.

She is the secondary antagonist of the visual novel and anime series Robotics;Notes. Initially portrayed as a very cold person who thinks little of her sister, Misaki is ultimately revealed to have been brainwashed by Kou Kimijima, who controls her in order to accomplish what he couldn't during his lifetime.