There is a pretty big cameo spoiler revealed in Marvel's new 'Ant Man'!

It's unclear whether it was intentional or not, but in a Spanish language TV spot for Marvel's new, 'Ant Man', another character from the Marvel Universe is seen.

[SPOILERS AHEAD]

During scenes from the spot, there is a flash of one of the Avengers, who will make in appearance in the new film. It is important to note that this cameo is not part of the much-rumored post-credits scenes, which are pretty great in and of themselves. That will probably feature some cameos from some very familiar faces as well. This particular cameo revealed in the new TV spot is right in the middle of the film, and actually sets up one of the later post-credits scenes. It’s also one of the scenes written for the film by Adam McKay and Paul Rudd after Edgar Wright had left the film.

That's it, I'm not telling. If you want to know, watch the video.

'Ant-Man' opens in theaters on July 17