Gaige is is the fifth playable class in Borderlands 2 and was the first DLC character available in the entire Borderlands franchise, with her being released on October 9, 2012.
As a high school student from Eden-5, Gaige originally came up with the design for Deathtrap as a science fair project to help fight bullying. Marcie Holloway, another contestant in the fair, used her father's money to get her way through it, while also stealing Deathtrap's designs. Using those blueprints to make a defective robot, Marcie ended up winning the science fair, with Gaige placing third. When a little shoving match occurred, Deathtrap ended up coming to the aid of Gaige, killing Marcie, causing her to get into serious trouble. Using her father as a distraction, Gaige bought a ticket to Pandora and stowed away on a train.
Gaige's action skill, Deathtrap, allows her to summon her mechanical friend into combat. Deathtrap, at first, can only melee enemies, but as you progress in the skill trees, this is expanded with shockwaves and laser attacks. Gaige is considered both the easiest and most difficult character to play, due to her skill trees offering different playstyles.