Helium is Hydrogen's sister, and she is a lot more lazy than her helpful sister. She prefers to stay away from all the riff-raff of the elements, as she is fairly unreactive.
She is very light and elegant, and can fly with her wings. She sometimes helps out Hydrogen in nuclear fusion of stars, and when this happens her yellow wings begin to glow.
She has a very high pitched voice, and likes balloons.