Plus you get different versions of Mandy Rose, and Nikki Cross. There are even two mystery versions that haven't been announced.
I know some take issue with these types of pre-order bonuses, and I get it, but as someone who is absolutely pre-ordering the game anyway I am all for this content!
In the link above and below they explain the WWE 2K20 Originals deal, and here's a screenshot of the pertinent information.
"The Fiend" @WWEBrayWyatt headlines the #WWE2K20 pre-order bonus --> WWE 2K20 Originals: Bump in the Night. The pack includes new horror-themed @WWE Superstars, arenas, moves, weapons, story-based 2K Towers, and a 2K Showcase! Get the details right here: https://t.co/6PF028uSDx pic.twitter.com/nBo0C5yOYB— #WWE2K20 (@WWEgames) August 15, 2019