Seven

A genetic experiment from the far future. She goes on science-y adventures with her brother and best friend 24. She's more level-headed and tries her best to keep 24 out of trouble, but that's not always easy due to her small size.

She has a small but noticeable amount of chinchilla DNA. As a result she loves sunflower seeds (which she affectionately refers to as "noms") and occasionally displays rodent-like mannerisms.