Duck Dodgers Starring Daffy Duck

Marvin The Martian has developed an ultimate weapon that will allow him to finally destroy Earth, which will ultimately allow him to take control of the universe. Upon the demonstration of the weapon, a slight snag hinders Marvin from completing his devious deed.

The Weapon is out of Atoms, which it runs on, so he sends his minions (All of which are characters from the Looney Tune universe) to gather Atoms to fuel his weapon.