Keyum Artesch is an Atrenid and the chief scientist of the Wanderer.
Keyum is a normal Atrenid. He is distinguished by the black coat he always wears.
Keyum was a child when the Atrenids left Petaurista. He always dreamed of exploring the stars and applied for stellar positions as soon as he was old enough. Soon he became part of the Wanderer personnel, and because of his Atrenid background was appointed as chief scientist.
Keyum always tries to remain optimistic in the worst of situations, and enjoys the company of others.