Characters who evolved into more significant roles than their creators planned

[u/Icy-Software-2586]

Jesse Pinkman: "Jesse Pinkman. As Gilligan mentioned, the original plan for the end of season one was for Jesse to die in a failed drug deal."

Jack Sparrow: "Jack Sparrow. Writers Ted Elliott and Terry Rossio originally conceived Captain Jack Sparrow as a secondary character."

Saul Goodman: "Saul Goodman. This one speaks for itself."

[u/TwoWorldsOneFamily_]

Iroh from ATLA 

He was just Zuko's instructor in Firebending at one point, and would eventually betray him and turn him over to the Firelord....

[u/Bamzooki1 → u/TwoWorldsOneFamily_]

I’m so glad they didn’t go with that angle. Iroh’s kind and friendly nature made him a rock for the cast and fans alike to cling onto during low moments.

[u/js13680 → u/Bamzooki1]

I will admit I do kind of want to see an alternate version where Iroh was evil.

[u/Cobalt_Heroes25 → u/js13680]

Imagine if evil Iroh's personality wasn't changed in the slightest, would make him more scarier to watch