Loona's Adoption

During the show, Blitzo has a traumatic flashback when a little girl (in-universe) asks Blitzo to adopt a dog. He remembers when he adopted Loona, about how she was an angry and scared hellhound in the adoption center, and would be "out of our hair next month" according to the adoption center. This caues Blitzo to freak out and refuse to give up the dog on the show he's acting in.

Example of:
Trauma Button