Ben finds an alien device called the Omnitrix that allows him to transform into different aliens with unique powers. Some of the aliens he can transform into include Heatblast who can generate and control fire, XLR8 who can run at super speed, Echo Echo who can duplicate himself and project sonic screams, and Way Big who is the largest alien and can fire powerful lasers. Alien X is described as the most powerful alien who can control and reshape the universe.