Uranium235
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Revealing the truth about myself is a spoiler. But I can say that I'm from another world.
Regarding Dagr... I'm only sure about the last two questions of the second poll. So, Dagr is either a guy whose weapon name doesn't contain the letter K, or a girl. Therefore, the only thing he can't be, in my opinion, is a maniac, because of the "точка" (dot/period).
Update: And of course, a grandma wouldn't poll herself. But since I know the Mafia bosses, the choice is even narrower.