This is the story of Dracoceratops and his original reign. Thank you @JurassicWolf for such an amazing universe.
Procerathomimus: (Hurrying to Dracoceratops’ quarters) (Knocks on the door)
Dracoceratops: Who is it?
Procerathomimus: (Opens the door and enters) Young prince, it is done. Your father is dead.
Dracoceratops: What?!?!? You actually went through with it?
Procerathomimus: Yes, I did. It will further our plans of unlimited power.
Dracoceratops: How did he die?
Procerathomimus: Easy, I just snuck in and injected him with some poison. I was gone before he realized what happened.
Dracoceratops: Okay, I see. What of the guards?
Procerathomimus: Pffft. The guards? They’re as dumb as rocks. They couldn’t see or hear me anyways because I evaded them.
Dracoceratops: So what’s the plan now?
Procerathomimus: Well, you have to visit your father now…
Hope you like it