Dr. Xenon has light pink skin and silver hair, seen wearing a black suit and tie underneath a white lab coat with pink accents on top. She wears a headset with a big red "X" floating above it, sporting black pants with pink stripes in the middle and black gloves. She has heterochromia iridum, a genetic condition which causes the irises to have different coloration, with her left eye being blue and her right eye being pink. Notably, her pink eye has an "X" across it.