Nova is a character appearing in American comic books published by Marvel Comics. The character appeared historically as the star of his own series, and at other times, as a supporting character in team books such as The New Warriors. He is a member of the intergalactic police force known as the Nova Corps. He has access to the Nova Force and superhuman abilities including enhanced strength, flight and resistance to injury.

"Secret Invasion" is a comic book crossover storyline written by Brian Michael Bendis and illustrated by Leinil Francis Yu, that ran through a self-titled eight-issue limited series and several tie-in books published by Marvel Comics from April through December 2008. The story involves a subversive, long-term invasion of Earth by the Skrulls, a group of alien shapeshifters who have secretly replaced many superheroes in the Marvel Universe with impostors over a period of years, prior to the overt invasion. Marvel's promotional tagline for the event was "Who do you trust?".