Twinklestar Runner, or Twinkie is Homestar Runner's little sister. She has a star shirt like Homestar, but it's pink with lace at the bottom and her star has 8 points, her body is also curvier than Homestar's, but she has no visible breasts. She has matching pink soles and two pink bows that tie her reddish-brown hair into pigtails. She has pink freckles on her face. When she was younger she wore a purple shirt with a swan on it.
When she reunites with her big brother, Homestar, she begins following him around like a puppy.
She is very cheeky and likes to play pranks. Her pranks are usually innocent unless Strong Bad gives her ideas.
The Masked Mistress is her one-sided rival.