Clobber Girl is Lisa's super hero alternative. She, along with her partner, Stretch Dude, got their powers by accidentally getting hit by an x-ray machine scanning Halloween candy when it malfunctions. Together, they fought the evil Collector, who kidnapped famous television characters from various 'nerdy' shows and movies. Her power is super strength. Clobber Girl is vulnerable to kryptonite.
Her feats include, lifting houses and bracing the statue of liberty to pop a zepplin air balloon. She also has her intelligence from her normal Lisa form, and equivalent durability to her strength.
Watch treehouse of horror 10 to see her feats in full.
Battle takes place in New York.