The Mad Hammer Bros. are two crooked construction workers that appear in My Life as a Teenage Robot. They often cause chaos and destruction seemingly for the fun of it. Not much is known about the duo except that they enjoy causing mischief. Despite their name they use all sorts of construction tools and hammers seems to be their least used tool. They, Vladimir, Mudslinger, and Lancer form into the Legion of Evil to share their vengence against Jenny. But due to arguing and lack of planning they are foiled by Jenny. In then end they are sent back to jail at the end of the episode.