* When Rex is training with Six, he starts singing:
-->''It started when the nanites went ka-pow upon the scene. Transforming all life on Earth like nothing you've ever seen. But there's one lucky hombre who can make them build machines. He's Gen-Rex!''
** One can't deny, it is catchy.
** If it isn't painfully obvious enough, ''he was singing to the tune of the original Ben 10 theme.''
* When Ben and Rex start to head out. Not realizing they've switched jackets.
-->'''Ben:''' Why does my jacket smell like bananas?\\
'''Rex:''' Ugh. This feels tight.\\
'''Bobo:''' You guys are our best hope? We're doomed!
* Loved it when Holiday points out that [[MadScientist Caesar]] isn't like normal scientists.
-->'''Dr. Holiday:''' For the record, most scientists are not like that.
* It doesn't matter what kind of reality you're in, Rath is still Rath.
-->"Seriously? I'm the cat who's all that. The Rath attack. And about a hundred other things."
** Even when he's not speaking, Rath's hilarious.
--->'''Rath:''' I was just trying to do my thing!\\
'''Rex:''' Destroy our city?\\
'''Rath:''' ''[Priceless ReactionShot]''
* Alpha's got Rex and Ben tries to help, while de-powered.
-->'''Rex:''' Do something, anything! ''(Ben throws a rock at Alpha, which hits Rex in the head with a *bonk*)'' ...Do something ''better''!\\
'''Ben:''' I can try calling it names!
* "You and your partners call it quits right now, and I'll keep the pounderizing to a minimum." "I was going to say the same thing, only in Spanish!"
* [[FauxHorrific Ben's horror upon finding out Rex's universe doesn't have Mr. Smoothie]].
-->'''Ben:''' Mr. Smoothie isn't here. That's messed up.