David Harbour Denies Avengers: Doomsday Spoiler, Teases Another

• David Harbour, portraying Red Guardian, denies giving away a major spoiler for Avengers: Doomsday.
• In August, Harbour quoted a line in a Russian accent that suggested a significant plot point.
• Robert Downey Jr. plays Doctor Doom in the movie, and the connection between him and Tony Stark is still undisclosed.
• Harbour's quote, 'You… are Tony Stark,' was seen as a potential spoiler but has now been refuted.
• Harbour may have unintentionally teased another spoiler during his denial.