S0E63: Mr. Oz Explains | Meet the Nightmare King

Need some intel on the Nightmare King’s forces? Join Mr. Oz as he gives you the lowdown on those who lurk in the Grim Realm... Meet the Nightmare King himself! He has escaped his prison and is growing his nightmare army by stealing dreamers’ imaginations. He is hellbent on corrupting and ruling the dream world, but his interest in Lunia’s hourglass suggests he has even greater ambitions!