BevelMember

BevelMember is the name of an account who commented on Reagan Ciamarra's account while it was hacked. They asked Mors who the people in the black and white photos were and if they were one of the chess pieces, they then got frustrated and called Mors out when he started ignoring them.

Some time later, BevelMember asked a user to solve a riddle. After guessing correctly, they told the user to "take this knowledge and apply it to your homework. ~The Sensum must be maintained."

Trivia

 * BevelMember seems to only be following Reagan Ciamarra and George Edwards on Instagram.
 * BevelMember could also be an entity like Mors and Sai.