Battle of the Rexs!

In this episode a cross diemension portal causes a Yu-Gi-Oh! duelsit to come to Ben's universe.He summons a dinosaur monster causing the Ultimatrix to malfunction and make Ben turn into Ben Rex.Ben then loses control and starts attacking him.The duelist sacrafices his monster to summon Ultimate Tyranno.Ben then shoots fire and destroys the monster!The duelist is so scared he activates Return from the Different Dimension and goes home.Ben then turns back into himself.

Characters
Ben

Villains
Duelist and Ultimate Tyranno

Aliens Used
Ben-Rex

Trivia
This is the 2nd episode Daggergor doesn't appear.