Benjamin Kirby "Ben" Tennyson, also known as Ben 23, is an alternate version of Ben Tennyson; a hero and a former mogul in Dimension 23 who first appeared in Store 23.

He met Ben Prime (Ben 10) and was trained by Ben 10 for some time and they fought Mad Ben

This version of Ben is very rich and famous in his imension

He obtained the hero's watch (the Omnitrix) while on summer vacation with his cousin Gwen and his grandfather Max via a comet.

he is 13 years old

he have 23 alien
