[Five]

Perhaps BeetleBrook? Link
(He has a father + mother listed, but that's just a placeholder)

He has a severe fear of imperfections, which could potentially stem from the idea that he believes that he wasn't good enough for his father? Plus, he's generally super arrogant and conceited as a result of this supposed inferiority, which can kind of link to how Mastoff believed that nothing could go wrong for him.

Anyway, give me your thoughts!