Big Bad/Web Animation

"The ultimate villain of the story, who's causing the problem the heroes must solve."

Note that Big Bad is not a catch-all trope for the biggest and ugliest villain of any given story. The Big Bad is the one who turns out to be behind several other seemingly independent threats.


 * The Big Bad of Broken Saints fits this to a T, down to  identity being unknown until the brilliantly timed closing epigraph of the penultimate chapter:
 * Super Mario Bros Z's primary Big Bad is Mecha Sonic, though Bowser and are a close second.
 * Spoilers for season 2 shows the next Big Bad might be either or.
 * In Banana Nana Ninja: Banana Shop of Horrors, the Big Bad is I.R. Kostlowski, the manager of the PriceCo Supermart who refuses to stop selling bananas for food after hearing the banana ninja's pleas to free them. He engages Baninja in a pencil-to-tiny sword Boss Battle to defend his "best wholesale contract."
 * In KlayWorld: Off The Table, King Womp is this.

The whole time, he has a scarily calm, reasonable, deadpan delivery (courtesy of Jason Steele) that sprinkles Nightmare Fuel through the Uncanny Valley.
 * The "Shadowy Figure" to Stinkoman from the 20X6 universe from Homestar Runner. Too bad we never see him...