The were-wolf and were-cheetah clans had been feuding for ages and their battles kept them on Earth while all other magical creatures left for other realms. Theodore Diggers attempted to stop a villain from manipulating the two clans into eradicating each other, but he failed. Dr. Diggers found the last surviving were-cheetah, an infant, and took her to be his daughter. The cub was named Brittany "Cheetah" Diggers and Gina immediately took to her, calling her her baby sister (despite the fact that Brittany towers more than a foot above her).

Like all were-creatures Cheetah can take 3 forms; human, hybrid and animal. She prefers hybrid because it allows her to speak, have hands with thumbs, and is a manageable size while also giving her some of the strength and speed of her animal form. She enjoys going on adventures with Gina and because of her physical prowess she acts as her sister's bodyguard. She doesn't do it for free though, her cut from the treasures they find goes towards her shopping, something she can't get enough of.

Brittany Diggers met and married Stryyp'Gia, the prince of El Dorado and is now Brittany Gia.