She dresses in a heavy metal/grunge/goth style with studded necklaces and bracelets, a light purple T-shirt with a skull, a black miniskirt, purple bike shorts, and black army boots. For nightime, Yumi wears a white sleeved nightgown. For swimwear, Yumi first wears camouflage bikini in the episode "Robopop", but in "Surf's Up" and "Onwards" Yumi now wears an purple bikini with half a skull on the bikini top and the other half on the bikini bottom. For formal wear, Yumi wears a black dress with the same studded necklace from her main outfit and wears black opera gloves. For ninja wear, Yumi wears a black sleeveless ninja outfit and wears a black balaclava.