c7b27db1_Borderlands_2_Wiki_Guide___IGN__Description
[Skill] Hellfire Hailtosis [Tier] 4 [Levels] 1 [Description] 
Melee Override Skill. Pressing the Melee action button causes you to breathe fire in a cone in front of you.
Psycho (Class) - Borderlands 2 Wiki Guide - IGN