Derpy's boyfriend is an unnamed character in the Breath series and a minor antagonist. He is killed by Skyblack for Derpy's protection.
The boyfriend was extremely abusive torwards Derpy and frequently abused her physically, psychologicaly and sexually. He seemed to enjoy torturing her in various sick forms of ways, such as shoving a screwdriver in her anus and forcing her daughter to watch it.
The boyfriend has a dark blue coat and a golden mane.
- He's the first pony to die in Breath 3.