Darkfurnace (unofficial name) is the Ghouled version of the Infurnus. It is seen in the slug it out app during a cut seen right before you face Locke and Lode in the second chapter. It is First seen in the Show officially in What Lies Beneath when the Shane Gang are in the deep caverns and must ghoul there slugs including there Infurnus slug Burpy to stop the Dark Bane. In Ghoul from Beyond a mega morphed Infurnus are seen ghouled.
Protoform Abilities - Can create a small green flame.
Dark Phoenix - Can engulf itself in green fire.
Blaze-Blast - Builds up energy releasing a huge wave of fire burning anything in range.