SpongeBob becomes offended when Clockwork refers to him as "SpongeBoy." SpongeBoy was the character's original name in the initial pitch for the show, then called "SpongeBoy, Ahoy!" This was later changed due to the original name already being copyrighted.
Martin Mull's final performance as Vlad Plasmius before his passing on June 27, 2024.
When El Tigre is chosen on the select screen, there is a random chance the announcer will call out his real name instead: Manuel Pablo Gutierrez O'Brian Equihua Rivera.
Azula is the only character who does not wear their default costume in the cover art. The artwork uses her outfit from Book Two of Avatar - La leggenda di Aang (2005), whereas her default outfit is from Book Three.
For Patrick's Super attack, characters were originally going to have unique "crushed" designs/animations as they were hit, as announced via Twitter. SpongeBob's was revealed during Patrick's character showcase, where he was transformed into a yellow splat. The feature was quietly removed before the game's official release.