Over the years, there have been a number of heroes who have received their powers through some magical device. Few have had devices that actually allowed them have multiple powers, or even completely different powers depending on the situation. Which bring us to Ben Tennyson and Robby Reed. Both heroes, both with gizmos that allow them to literally dial in the hero/power they want.
Two kids. Two devices. One championship belt.
DIAL H FOR HERO
Dial H for Hero is a comic book feature published by DC Comics about a mysterious dial that enables an ordinary person to become a superhero for a short time, by selecting the letters H-E-R-O in order. Each time it is used, the dial causes its possessor to become a superhero with a different name, costume, and powers. These superheroes are usually new, but on one occasion the dial caused its user to become a duplicate of an existing superhero, Plastic Man. Some versions of the dial contain additional letters, allowing other kinds of transformations.
The franchise is about a boy who acquires a watch-like alien device called the Omnitrix (later the Ultimatrix) attached to his wrist that allows him to turn into alien creatures. In April 2008, Ben 10 (the original television series) was succeeded by Ben 10: Alien Force, which itself was succeeded in April 2010 by Ben 10: Ultimate Alien.