Lightning is a recurring character and the sister of Thunder. Along with Thunder, she first appeared as a background character in early episodes, and starting with Seeing Red, she becomes a regular. She is voiced by Kimberly Brooks.
Lightning is a girl with dark skin and hair. She has a gold headband around her hair in an afro, and wears a white, dark blue, and gold supersuit. She wears black, white, and gold sneakers with white, black, and gold socks.
She argues with her sister over a hair band, thanks to the effects of a red kryptomite running loose at Super Hero High.