"
Gothic" is an adjective, not a noun. Therefore, a group of people can not be "gothics". "Goths", perhaps (though not likely given how little people know about the subject, especially people who refer to themselves as "gothic"). Similarly, "
emo" (which, by the way, has nothing to do with Gothic anything) is short for "emotional", which, also, is an adjective, not a noun. Calling people "gothics" or "emos" just makes you look like an uneducated
jackass.