The video for "Mercury", directed by Ace Norton, was simultaneously unveiled along with the song. It portrays monkeyscientists placing an assortment of body parts into a body. The resulting creature, which has a bull's horned head, a crab's pincer, and a hairy human body then rises in popularity, eventually becoming the President of the United States. The entire time, the scientists are controlling it. Eventually, the creature (named Smith) goes to war with other countries to get bananas for the monkey scientists. It was made available to view on Bloc Party's website.