Dark Fawful

Dark Fawful appeared in 2009 video game called Mario & Luigi: Bowser's Inside Story. Dark Fawful is the revamped form Fawful takes after absorbing most of the Dark Star's power, who is the penultimate boss of Mario & Luigi: Bowser's Inside Story and its remake, Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey. In this form, Fawful has greater powers and an altered appearance, featuring red glasses, a cloak that resembles the one worn by his old mistress Cackletta, and his Vacuum Helmet that seemingly has a life of its own.

While his battle in the original game uses the standard boss battle theme, in the remake Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey, Dark Fawful has his own battle theme, which is a slowed down arrangement of Cackletta's battle theme from Mario & Luigi: Superstar Saga and Mario & Luigi: Superstar Saga + Bowser's Minions.