5) Cosmo The Space Dog
If you stayed to the end of the credits, you would have seen the surprise cameo from Howard the Duck in Guardians of the Galaxy. With the shock of seeing that character back on screen after the notorious 1980s movie, you might have missed that that same scene features another wacky Marvel character you never thought you’d see on film.
In it, a dog in a space suit licks the Collector, only to be shaken off. The same dog appeared as one of his exhibits earlier in the movie.
This is, in fact, Cosmo the Space Dog – the head of security in Knowhere and an associate of the Guardians in the comics. Once an ordinary dog sent into space in a Soviet space shuttle, he later mutated and learnt to speak. While the movie couldn’t stretch to a talking dog (a talking duck is far more acceptable), the Guardians of the Galaxy animated series does feature Cosmo as a regular character.