"So, I don't see why girls have such a bad rep on games.."
It's not the genuine females that have a bad reputation(usually), it's the guys pretending to be girls to reap the benefits off kids who think they have struck gold when they meet a "girl" online. Even if someone doesn't believe you when you say you're a girl, you just need to go on Google and/or Facebook and get a picture of a girl. The next thing they would ask is to hear your voice which is extremely faulty in my opinion but you can still use an artificial voice editor to make your voice sound feminine. The last thing they might ask is to have a video chat in which I would never do online due to having a lot of suspicious characters online so I'll just say that I have no webcam.
My understanding of that particular guild in Spiral Knights is that looks are deceiving
Not I. I know someone in the guild and am well informed.