I wouldn't call you Eurus because you are nowhere near at her level of demented and, honestly, screw gender. Most of the time, I'd say you're Sherlock (if we're specifically referring to Holmes siblings only). But, in this case, with Kaiser, you're the Mycroft. You're the more mature one having to deal with the other one's shit and hating it. Meanwhile, he's the little brother that's always getting on your nerves with his smartassery and, frankly, stupidity when it comes to being a chaotic little shit. Does that clear it up for you?