Sadie is Nick's older sister, has brown hair but has green eyes instead of blue and wields the Ultimawhip, It has the same mystical properties of the ultimasword, except the whip is slightly more difficult to use. She wears torso and side arm armor black and purple . She wears her hair in a ponytail. Sadie is very smart but she doesn't watch TV too much because she studies too much. She barely has any time to herself. But when she meets the Society, she learns of everything that was on TV when she left to go to college. Her best friends include the Powerpuff Girls and Jenny from My Life as a Teenage Robot.
Her personality also more emotional and sometime could slip up due the stress she had when in college, especially when confronting her nemesis, Shannon, whom is ten year younger than her.
She very protective about her family, especially Nick, when he's become the Org's Primary threat and is willing to do whatever it takes to protect him, even at the cost of her own life.