#1. Heel turn: Liv Morgan
Liv Morgan was supposed to be one of the more interesting returns heading into the new decade. Towards the end of 2019, there were several vignettes teasing a return and a new character - with a lot of anticipation from fans as well.
She returned in the final segment of the decade to hijack the Bobby Lashley-Lana wedding, which cemented her return as a face. She aligned with Rusev and even got a couple of squash wins over Lana.
However, an untimely injury for Rusev meant that the storyline was scrapped after over four months were put into it. After that, Morgan has had a mini-feud with her former Riott Squad member Ruby Riott.
They even had a match on RAW with Sarah Logan as the special guest referee and Morgan picked up a sneaky win. All three former members of the Riott Squad will battle it out inside the Chamber and Morgan re-aligning with Riott and Logan is a big possibility. This would see her turn heel again.