Adam is Louise's ex-boyfriend.
In series 3, he draws a moustache on Louise's lip, which prompts Tracy to plan revenge. She prepares water bombs, flour bombs and rotten eggs to throw at him. Unfortunately, she mistook new boy Wilson for Adam and she sets to throw her ammunition at him, before locking him in the basement. Tracy only realises her mistake when she meets the real Adam.
Adam is quite tall. He has dark hair.