Reuben is a genetic experiment created by Jumba Jookiba to wreak havoc on the universe. The experiment was a failure - while he did possess the powers Jumba gave him, he was too lazy to use them, preferring to make sandwiches instead. Since being activated by Hämsterviel, Reuben has (begrudgingly) helped Gantu capture Jumba's experiments on Earth, although mostly he only cracks jokes at Gantu's expense.
This section looks lonely. Why not add an askblog here?