The Scarlet Pumpernickel used Sylvester in a speaking role. Mel Blanc voices Elmer Fudd, who plays the role of an innkeeper here. Elmer was originally voiced by Arthur Q. Bryan, but since the character had only one line of dialogue, Mel Blanc was told to go ahead and imitate Bryan's voice for the character. Blanc did not like imitating, however, believing it to be stealing from another actor. Although the title (invoking a type of bread instead of a flower) is a pun on "The Scarlet Pimpernel", the Pumpernickel is given a portrayal closer to that of Robin Hood: in one scene, after
What Love Is Made Of extremely positive about "What Love Is Made Of", describing it as "darker than anything" from "On a Mission", while calling it "slinky". The reviewer went on to commend the "irresistibly pouty" chorus. Pitchfork Media's Katherine St. Asaph commented that, in the song, the singer "sound[ed] completely enthralled, by either her lover or the music" and complimented her voice, noting that it seemed "ten times bigger than before". Jordan Sargent of "Spin" magazine called the track "exuberant" and highlighted Katy's vocal performance, which he deemed "typically fantastic", while the team from pop music website Popjustice gave "What Love Is Made Of"