Marvel Comics' editor-in-chief and top writer has defended the outing of Bobby Drake/Iceman.
In the new issue of All New X-Men, the young time-travelling version of the ice-wielding mutant is outed as gay by psychic Jean Grey.
In the comic, Iceman thinks he could be bisexual. Grey, on the other hand, tells him she knows he is 'full gay'.
Some fans have accused the Marvel writers of biphobia or bisexual erasure.