Not a morning person? Let your coffee mug express your feelings about being awake too early. The Adventure Time Angry Character Faces Panel 16 oz. Travel Mug features Finn the Human, Jake the Dog, Marceline, and Princess Bubblegum making the faces you want to make at six in the morning. Brighten up your morning with this convenient travel mug from Cartoon Network's hit show Adventure Time with Finn and Jake. Hand wash only. Not dishwasher safe. Do not microwave.