Vince is the leader of the Right Arm.
Biography
In The Death Cure, he came up with a plan with Thomas and Brenda to trick WICKED into letting them into their headquarters by bringing "kidnapped" Munies with him to sell for their Trials.
Physical Appearance and Personality
He is described as being a "huge man, more fat than muscle, his girth barely contained between the arms of the white plastic chair he sat in." He also has massive arms and a deep voice.