ISC is a gang in Chicago Insane Spanish Cobras. They were around long before these mayates called Insane Southside Crips, damn nigga it must be hard out there in Denver!!!! The Cobras were big in Logan Square, Humboldt Park, Cicero, K-town (Division and Tripp) and Bucktown back in the day. They rep black and green and are the leader or the Insane Folks family, which includes Orchestra Albanies, Insane Deuces, 22 boys, Ashland Vikings, C-notes and maybe others. I'm str8 Cobra killa but these niggas will shoot if bothered.