In Lincoln's vision of what would happen if he didn't tell Lisa the truth, one of the effects was Lucy being bitten by one of Lana's vampire bats and turning into a vampire, complete with fangs and the ability to transform into a bat.
She dresses up as Lori to cover for her during Pop-Pop's video chat. She even puts on makeup.
She then dresses up as Lola. When their parents found out about their little charade, their punishment was to go about their tasks while still dressed as the siblings they covered. When she went back to her poetry slam, she was still in her Lola disguise and immediately booed off the stage for her appearance.
Lucy's first makeover resembles a cheerleader. She wears her black hair in two pigtails, held together with yellow hair bands. She dons a red and yellow cheerleader's outfit, with a yellow "W" on the front, holds two yellow pom-poms, and wears yellow socks, and white sneakers.
Lucy's second makeover has an 80's hairstyle. She wears dark magenta hoop earrings similar to Leni's. She also wears a yellowish-orange leopard-print sweater, black sweatpants, a magenta belt with a white buckle, a white bracelet on her right wrist, and magenta sandals with heels.
Lucy's third makeover has a beehive hairdo and wears a golden tiara with pink jewels. She wears a blue ball gown with ribbons and white gloves.
Lucy's hair is dyed blond, with a dark magenta ribbon-like headband. She wears a pink dress with a dark magenta jacket over it, and dark magenta shoes. Lucy also sports some light blush and pink lipstick.