1) Australian punk rock group 2) Mischievous children 3) Rowdies 4) Rowdy sorts 1) Brats 
There have been several groups of fictional characters in the Marvel Comics universe who have been known as the Hellions. These groups were rivals of various teams of younger mutant heroes in the X-Men franchise. The first and most notable incarnation of the Hellions were students of Emma Frost and the Hellfire Club`s Massachusetts Academy, and w....