#1 Bray Wyatt
Bray Wyatt is one of the most popular acts on WWE TV currently. He hasn't been seen on TV ever since he was burned alive by Randy Orton at WWE TLC 2020. Wyatt's stint as The Fiend gave new life to his career, which was waning during his run as The Eater of the Worlds. Wyatt made his WWE main roster debut in 2013, and defeated Kane in his first pay-per-view appearance. Years before he became Bray Wyatt, Windham Rotunda was Husky Harris.
The Husky Harris character wouldn't have done much for Rotunda's WWE career
Harris was a rookie on the second season of WWE NXT. Current AEW star Cody was his pro during the competition. He soon made his main roster debut along with Curtis Axel, at the 2010 Hell In A Cell event, where the duo helped Wade Barrett defeat John Cena. Harris stayed with The Nexus for a while, before he was sent back to FCW. He polished his skills there, and worked on the Bray Wyatt character around the same time. The rest, as they say, is history.
From being a generic heel who wouldn't have done much of note in WWE, to a top heel on WWE TV- Bray Wyatt's WWE journey has certainly been an inspirational one.