Honestly, the description of the classes was so much help for me. For the longest time I thought I was a thief, even your description of the thief matched me pretty well ... espically the bad. But after reading all of them it gave me a epiphany, I act like a thief a lot but I’m happiest while acting like a mage. So to me that meant I was a mage. But could a mage have thief qualities, like being manipulative if they think it’s for there friends good?

Class Descriptions are just overviews of the sort of ‘stereotype’ regarding Classes, and if everything else in Homestuck tells us anything, is that stereotypes are dumb and everyone is unique and has their own specific nuances. But, Classes and Aspects do relate to your personality when it comes to the way that comes naturally to you, and what you’re the happiest and most comfortable with, something that is truly you. If you’re acting Thief-like but you’re not happy when doing that, that’s fair, doesn’t necessarily mean you’re a Thief. A Mage though? I could see them acting Thief-like when they’re in an unhappy place- Frustrated and Self-Driven may lead them to act on their own and try to cheat the System.