Formaron parte del grupo «Cobra»: Christian Dotremont, Jacques Calonne, Joseph Noiret, Asger Jorn, Else Alfelt, Karel Appel, Mogens Balle, Ejler Bille, Eugène Brands, Hugo Claus, Constant Nieuwenhuys, Corneille, Pierre Alechinsky, Jan Nieuwenhuys, Lucebert, Pol Bury, Georges Collignon, William Gear, Stephen Gilbert, Svavar Gudnason, Reinhoud d'Haese, Henry Heerup, Egill Jacobsen, Carl-Henning Pedersen, Erik Thommesen, Jacques Doucet y Jean-Michel Atlan.