This episode marks Ben's first transformation into Wildmutt in the Ultimate Alien series. Although Wildmutt was seen briefly in the season one premiere, "Fame," Ben hasn't officially transformed into him since the original series episode "Ben 10 vs. Negative 10 Pt. 2."
Kevin says Dr. Viktor was still alive when he tossed him in the Null Void during his power hungry rampage last season; it is unknown what froze Viktor into a block of ice.
Ben uses Heatblast for the first time since the original series.
Gwen claims that Plumbers can only arrest aliens, but they arrested Dr. Animo in "Escape From Aggregor", and he's human.
Alien Forms Used:
1) Echo Echo
2) Ultimate Echo Echo
3) Big Chill
4) Ultimate Big Chill
King Viktor: Another tank? Bring a hundred!
Heatblast: I'm fresh out of tanks, your highny. But I am bringing the heat!
Prince Gyula: (about Dr. Viktor) He's an empty shell, existing only to do my bidding. (activates remote) Destroy them!
Big Chill: How'd I know he was gonna say that?
In this episode Dr. Viktor is dead. Even though Dr. Viktor is dead, now an evil king's mind lives inside of his body and controls it.
It was never revealed of how or when Ben got back his Heatblast and Wildmutt forms.
The events of the Ben 10: Alien Force episode "Simple" are referred to.