Washington, June 23 -- Tom Holland has revealed that Zendaya was the first person he told after learning that Robert Downey Jr would be returning to the Marvel universe as Doctor Doom in 'Avengers: Doomsday.'

The actor, known among Marvel fans for accidentally revealing spoilers in the past, said he managed to keep the major casting news under wraps, with one exception.

Speaking in an interview, Holland recalled learning about Downey's return directly from the actor himself.

"I think I hung up the phone and said [to Zendaya], 'Downey is coming back,'" Holland said, as quoted by Variety.

Holland said he and Downey stay in touch and occasionally catch up. "[Robert and I] just have casual catch-ups every now and then. He called and told ...