Darkos is the son of Maltazard and an unknown female weevil, the second-in-command of Necropolis, the secondary antagonist in Arthur and the Invisibles and the secondary antagonist turned supporting character in Arthur 3: The War of the Two Worlds.
He was voiced by Jason Bateman in the first film, and Iggy Pop in the third film.
Arthur and the Invisibles
Darkos first appears at Max's bar when Arthur, Selenia and Betameche stops over. He then summons dozens of Seides to him and tries to capture the trio, but fails in doing so. He later catches Arthur and Betameche discussing about Arthur's marriange.
Later when Arthur destroys Necropolis using his new ball, Malthazard, abandons Darkos, leaving him to drown. What happens next is unknown, but it is certain that Darkos somehow survived the flood.