Although Mrs. Prysselius is the main antagonist from the 1997 animated film version of Pippi Longstocking, Thunder-Karlsson and Bloom are the real villains, and they are also recurring villains in the TV series. Thunder-Karlsson is the bigger leader who wants a golden tooth, and Bloom is the skinnier one who wants an English bowler hat. Their overhearing Mrs. Prysselius over Pippi Longstocking having gold coins gives them the idea of robbing Pippi.

Thunder-Karlsson is voiced by Dave Thomas in the film, and the late Len Carlson in the TV series, and Bloom is voiced by the late Wayne Robson in the entire franchise, film included.