[@Cat] [@EmzyOfNeverland]
The twin could really shake things up, say, if he were to eventually escape.  There are so many possibilities with that.  He could run around claiming he is the true heir, while keeping his crimes a secret, he could commit crimes while claiming he's the heir, or he could even commit crimes and not claim he is the heir, but use it as a constant blackmail to the royals.  Actually, he could even impersonate Nik if they're identical and cause a real disturbance.  Heck, maybe the twin could even call another kingdom to attack theirs.  There are so many possibilities. XD