She is a stripy golden and white hamster. She looks identical to her brother Stan. She has green eyes and there is a red ribbon wrapped around her tail.
She has a crush on Maxwell. While in the English version it might seem that the two have confessed their affections, a Japanese episode confirms that they are not quite romantically involved yet. In the English version, she has a valley girl accent. She is also shown to be good friends with Hamtaro, as she confided in him her crush on Maxwell.
- Her interest in rhythmic gymnastics have been influenced by Hillary, who is a gold medal gymnast.
- Sandy can be told apart from Stan by her trademark ribbon on her tail, whereas Stan instead usually carries maracas. Sandy also sometimes has a pink ribbon.