Hellions by Zeb Wells

Bad is the new good! When Krakoa opened its doors to all mutants, its leaders knew they'd have to accept some of their worst foes into the fold - but they didn't plan for what to do with them. Not to worry - Mister Sinister has ideas! Meet his new Hellions: Wild Child, Empath, Greycrow, Nanny, Orphan-Maker, Psylocke...and Havok! But can they handle the return of Madelyne Pryor, the diabolical Goblin Queen?! Plus: The emergence of an old enemy and his fearsome warriors makes the Hellions' new lives a hell on Earth! Arcade puts them to the test in his new Murderworld! Psylocke takes on Betsy Braddock! Tarn the Uncaring seeks revenge! And secrets, betrayals, alliances, and loss all come boiling to the surface! The Hellions are the mutant team you're going to hate to love! Collecting HELLIONS #1-18.