Elmo

Elmo (エルモ, Erumo) is a student from Athelney, a member of the Manipulators' Tower, and Callie's older twin brother.

Appearance
Elmo is a teen with fair skin, short dark brown hair and brown eyes.

As a student and member of the Manipulators' Tower, Elmo most of the time wears a long-sleeved dark gray sweater with black pants, alongside long black robes with a white hoodie and necktie. He also wears dark brown dress shoes with dark purple stockings.

Personality
Contrasting to his sister's personality, Elmo is very calm, mature and analytical. He is very cautious when making choices, and can be quite judgmental sometimes. Overall, when interacting to others, Elmo manages to keep a cool and friendly persona. He is responsible and studious, having obtained a lot of knowledge about Nen by searching more about it after classes.

He cares for his sister a lot, and is constantly striving to make her a more responsible and serious person, as her current personality could harm her in certain aspects. Callie's shenanigans can embarrass him often, but he is always patient and caring with her. Elmo also seems to be divided when it comes to Callie's Forest Kitten pet, Tenders: while he finds the kitten cute and grew to be fond of him over the years, he is very careful and skeptical near him, as he is aware of Tenders' capabilities.