* Here's a list of the WesternAnimation/{{Ben 10}} Aliens that appear on screen (most are just cameos): Heatblast, Wildmutt, Diamondhead, Stinkfly, Upgrade, Rip Jaws, Way Big, Four Arms, Rath, Echo Echo, Chromastone, [=AmpFibian=], [=XLR8=], Cannonbolt, Spidermonkey, Goop, Jet Ray, Big Chill, [[RememberTheNewGuy Shocksquatch]] and Brainstorm. [[PuttingTheBandBackTogether They got the band back together]].
* After Six gets injured, Ben is arrested and taken to custody in Providence's headquarters. While they are trying to heal Six and figure out what's going on, he offers to help, and Rex reacts by pointing out he is under house arrest... only for Ben to reveal with a grin he [[PlayAlongPrisoner could escape whenever he wanted and was just staying to see if he could help]]. Cue him turning into [[IntangibleMan Big Chill]] and casually walking out of his cell.
* [[SuperEmpowering Upgrade]]-[[FusionDance enhanced]] Rex. That is all.
-->'''Rex''': What happens when the best you can do just... isn't enough?
-->'''Ben''' (''EurekaMoment''): You get an upgrade!
-->'''Rex''': Weren't you listening? Alpha has the Omega!
-->'''Ben''': I'm not talking about a nanite.
-->(Ben turns into Upgrade, and merges with Rex)
-->'''Ben!Upgrade''': Build something.
-->'''Rex''': (''uses his giant fists, resulting in twice as tall fists with spikes on them'') ''Sweet''! So what's the plan?
-->'''Ben!Upgrade''': You build stuff, I make it better. Fight, fight, fight. We win.
* The fight between Ben and Rex.
** Particularly, Rex vs Humungousaur.
* Alpha, and his alien EVO transformations are pretty much badass personified.
** EVO-Heatblast.