Horacio Domingues cooperated with writer Carlos Trillo on several comics, starting with 'Hyter de Flok' in 1990, which appeared in the Argentine periodical Puertitas. It also appeared in the Italian Skorpio and as an album at the French publisher Albin Michel, called 'Le Monde des Nombreux Noms'. Afterwards, they created 'La Mauvaise Fee' and 'Pourquoi les Chevaux ont Disparu' ('Why Did the Knights Die Out?') for the same French publishing house. With Carlos Meglia, he has worked on 'La Biblia Para los Niños'. At Dark Horse, he has drawn 'Lazarus Jack' with texts by Mark Ricketts.