Cottontail and Sly Foxy used to be normal children, but they were abducted and made as test subjects used for experiments. Which brought them where they are today.

Cottontail used to be a girl named Miraku, Who's very good at playing the flute. Cottontail goes by the pronouns She and Her (pink blonde ombre haired girl).

Sly Foxy used to be a girl named Melody, Who loves foxes and music. Sly Foxy goes by the pronouns He and They (Teal haired girl).