Mystek
Mystek is a character in the DC Universe. She was created by Christopher Priest and Manny Clark in the Ray #12 and died in Justice League Task Force #32.
Fictional character biography
Very little information has been revealed about Mystek's life prior to her first confrontation with the Ray. Seong is a Korean woman born in Queens, New York who prefers to be called 'Barclay'. During an undisclosed incident in Seoul, she developed claustrophobia.Mystek comes into conflict with the Ray, who she believes to be an enemy. Martian Manhunter recruits her into the Justice League, but she is killed soon afterward when her claustrophobia causes her to leave the League's ship and suffocate in space.