The panel was flooded with hooded figures concealed by masks that resembled the iconic comic book villain known for his skills in both sorcery and science when Downey Jr. revealed himself.
This element has sparked controversy, with some viewers arguing against the portrayal of homosexuality, claiming it is merely a ploy to attract a global audience.
More than 10,500 athletes will compete at the Olympics, 100 years since Paris last staged the Games. Competition started on Wednesday and the first of the 329 gold medals will be awarded on Saturday.
Although Benedict has not been a central figure in recent seasons, the upcoming season will focus on his search for a soulmate, according to a US media outlet.
. The Gossip Girl alum and the supermodel made a stunning appearance on the red carpet on July 22, dressed in matching scarlet red and mustard yellow outfits that paid homage to Deadpool and Wolverine's costumes.