Dan Siskind (aka "Troll") is a founding member of the Profane Existence (P.E.) collective, and editor of the long-running anarcho-punk zine Profane Existence. Prior to P.E., Siskind was the editor of Minneapolis Alternative Scene (M.A.S.).
In 1992, Siskind co-founded the Emma Goldman Anarchist Center, and later helped to found Extreme Noise, an all-volunteer, all-punk record store. A well-known figure in the anarcho-punk scene, Siskind is also the creator of custom models.