These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Although Tariq being in a young offender's institution shows he was a Jerkass long before he was introduced, he's later revealed to have been badly bullied while imprisoned.
The programme tries to make Kyle Stack into one a few times but it's hard to make it stick when you consider that his previous actions have ranged from selling vodka at school to attempted murder.
Justin Fitzgerald's actions throughout Series 10 are a direct consequence of the end of his parents' marriage and his mother's nervous breakdown.
Rich Bitch and juvenile delinquent Gabriella Wark is resented by her parents for being indirectly responsible for her younger sister's death years before and is still The Unfavourite in their eyes. The Woobie part is reinforced by her father striking her across the face after she steals a car.
Kevin Chalk when he a pulls a Batman Gambit to avoid being prosecuted for computer hacking. Which works and nets a him a job offer from the company.
Moral Event Horizon: Max Tyler's a Jerkass from his first appearance and an adulterer to boot, but what really takes the biscuit is his physical abuse of Phillip.
School Governor Ralph Mellor hits it when he tries to swap his daughter Flick's positive drug test for her boyfriend Marley Kelly's clean one (saving her place at the school and his reputation, and getting rid of Marley in one go), and then goes far beyond it when he attacks Marley with a golf club and later drives a mechanical digger into the school.
Lewis Seddon crosses it when he tries to burn Jack alive.
As does Barry Barry when he starts people smuggling.
Small-time bullies Lisa Brown and Shaznay Montrose well and truly cross this line when they crash Gabriella's house party and utterly destroy the bedroom of her deceased sister with sadistic glee. It snaps Sue out of being an unprofessional Jerkass towards Gabriella and even disgusts Kacey who has more reason than anybody to hate Gabriella.