My Little Pony: Friendship Is Magic Season 8 Episode 24 - Father Knows Beast Episode Title:Father Knows Beast.Episode Description:As Twilight Sparkle starts to worry that Spike's upbringing among ponies may have held him back in exploring his dragon heritage, an adult male dragon named Sludge crash-lands in Ponyville. Spike takes him back to the Castle of Friendship so he and the Mane Six can help him recover from his injuries, and Sludge reveals that he is Spike's father and has been trying to find him for years. As Spike and Sludge spend time together, Sludge persuades Spike to give up his comfortable lifestyle in the Castle, while secretly planning to move in and enjoy its luxuries for himself. When Twilight expresses her concerns, Spike accuses her of being jealous that he has a real parent in his life, but Smolder is unimpressed with Sludge's loafing and tells Spike that dragons should not act that way. With her help, Spike tricks Sludge into thinking that both of them are going to move out of the Castle and into a cave. Sludge admits that he is not Spike's father and leaves, and Spike apologizes to Twilight and acknowledges her as his family.