The Core's helmet shoots into space and attaches to Amphibia's moon in retaliation, setting it on a crash course with Amphibia. Marcy and Sasha finally get their Calamity powers as the Prophecy of the Three Stars comes to pass.

"The Hardest Thing" is the fifty-eighth and final episode of the Disney Channel animated series Amphibia. Anne's journey comes to an end. Following their return to Amphibia, the Core, still trapped within the helmet, flies up into space and attaches itself to a pod located up on the moon. It...

This is reverted in "The Hardest Thing" where the Core again referred to itself with plural pronouns. In "The Core & The King", the Core's gigantic former body is still in its old room after its mind has been transferred to Marcy's. The Core resembles the giant robot, "The Beast", from Episode XXV of the Samurai Jack series. Apart from physical ...

The Core, now inhabiting Darcy's helmet after having lost their human host, committing an act of massive destruction for petty reasoning, smashing Amphibia's red moon into the planet to deny the heroes victory, makes the situation analogous to The Legend of Zelda: Majora's Mask, aided by the fact that the moon is revealed to be a massive ...

"All In" revolves around Anne, Sasha, and their allies trying to stop King Andrias and Darcy (who is Marcy being controlled by the Core) from conquering Earth, while "The Hardest Thing" revolves around Anne, Sasha, and Marcy trying to save Amphibia from being destroyed by the Core, which has taken control of the moon and is trying to crash it ...