Ross Marquand voices Johann Schmidt / Red Skull, the "Stonekeeper" and former Nazi commander of Hydra during World War II.  Marquand replaces Hugo Weaving, who had expressed reluctance to reprise the character from Captain America: The First Avenger (2011).  Red Skull was created through CGI and portrayed with stand-ins on set.  Avengers co-creator Stan Lee makes a cameo appearance in the film as Parker's school bus driver, while screenwriter Stephen McFeely cameos as Secretary Ross's aide. Kenneth Branagh, the director of Thor (2011), voices an Asgardian distress caller in an uncredited cameo. David Cross was invited to make a cameo appearance as Tobias Fünke, his character from the television sitcom Arrested Development, which the Russo brothers had previously worked on; this was prevented by a scheduling conflict, but Fünke still appears in the film as a specimen in the Collector's collection, played by an uncredited extra.  Executive producer Jon Favreau was to reprise his role as Happy Hogan, while co-director Joe Russo had a cameo appearance as a paparazzi photographer, but this scene did not make the theatrical cut of the film.