Pink Pineapple & Coconut

Origin
Professor Anne Anna aka The Pink Pineapple was a groovy 70's superhero who got "reimagined" as a darker, edgier heroine in the modern age. But when her archenemy sends her back in time to the 1950's, she has adventures and recaptures what made her a great character in the first place.

At some point, she gains a mechanical unicorn named Coconut and returns to the future.