He is about the age of Sue and has ginger hair color and a southern accent as of all the Glossners. He has two little brothers and a little sister who are reckless. He is the son of Rita Glossner, a sleazy unchaste woman of attitude who is a major problem for the Heck's. Derrick drives a motorbike. The Glossner kids once invaded the Heck's house and Sue and Brick Heck were thinking of ways to get them to leave and were eventually locked out. Sue asked Derrick nicely to leave their house and they did and he kissed her telling her he always kinda liked her. He later visited Sue at her job in the mall, Spudsy Malone's when she eventually told him he can't be kissing her and he did. Sue acted angry every time they kissed but secretly liked it. They eventually kept kissing but he stopped when he thought she didn't like those kisses.
In Hecks vs Glossners: The Final Battle, the Heck family attacks the Glossners after Sue's car is stolen by the kids and given to Rita. In the process, Sue is turned into a Prisoner of War who is rescued by Axl, of all people. On the way out her bedroom/prison, she finds the stolen snowglobe only to be stopped by Derrick, who announces that he fulfilled his promise to straighten his life out before getting back together with her. She insists that she's in love with another man, and he becomes furious, then takes the snowglobe from her and throws it across the house into the front yard. Sue rushes after the snowglobe and miraculously catches it before it hits the ground.