Joseph is between 13-15 years old and always seen in public wearing his black pants, dark gray boots, gray shirt, and iconic white hoodie with a single dark blue/black stripe across it. Joseph's face also makes him look very tired and laid back, which is mostly true, except for when he's in battle. Joseph's Bad Time expression has half of his face faded out with his eyes glowing a bright orange.  Much like Sans to Papyrus, Joseph likes to annoy his brother Zacc with bad puns.