Zag is a yellow alien for the movie "Tellur Aliens".
Official Site description
Zag is a born rebel, constantly spurred on by mischief. The only thing that Zag is completely serious about is flying spaceships. Zag’s future vocation, which he loves to distraction, is the only thing that gets him in line and keeps bringing him to class. However, Zag’s excitable nature constantly gets him in trouble. In fact, he’d never be in the clear on his own – but that is what friends like Vic and Ellie are for.