When tord was young. He was abused by his step father and that's why he has bad self esteem issues.
But when he met Edd, Tom, and Matt.
He became a bit more happier. But he was still sad since he was abused. The group didn't know this until tord became a teenager and started to have bruises on his face and cuts on his face. The group called the police and had Tord's step father tooken away to jail.
That's why he stays with the group cause he feels safe with them.