While fighting Spamton and Spoiler:Spamton NEO, the player is able to press F1 to summon a miniature Spamton angel that heals the party, which can only be done once. On the PS4 and Switch versions, this function is normally mapped to clicking the right stick, but connecting a USB keyboard to the console allows the player to activate it with the F1 key anyways.
Contributed by game4brains