 Although not named, in the Ultimate Fantastic Four #35 (Dec. 2006)
there is a huge alien creature, used by the Acheron Empire, ruled by Thanos, that resembles the Acanti.An Acanti appears in the "X-Men" episode "Love in Vain".Enslaved by the Brood (here called "The Colony") to be their vessel, it is freed when Professor X uses his psychic powers to break the Brood's control.