There is actually quite a bit of information about Glam. The fact that they use 'they' pronouns is mentioned as being relevant on their wikia, explaining that they tend to retaliate against lapses by kicking hero ass. They have a bunch of really publicized jobs, but what makes them notable is that Glam hasn't seemed to have the same powerset on any one of those. They seem to have a rather whimsical nature, and like joking a lot while pulling their jobs, chatting with the people involved while they do it and taunting everyone they face.