You can find the Cheat Engine HERE [www.cheatengine.org]

Download the "Unlock NPC V.06.rar" HERE [drive.google.com]

Install and then get ready for Step 2

1. Boot up Cheat Engine & WWE 2K15

2. In WWE 2K15 go to the Main Menu

3. In Cheat Engine Click the computer in the top left to open a process & Select WWE 2K15.

4. use Ctrl+O to open the "Unlock All NPC V0.4.CT" file to load the table.

5. Make Sure "->__AJ Lee Genderchange" Value to 0 to make her Male

6. to Unlock and NPC Change "Activate" Values to 1

8. Change all "Entrance" Values to 102 (This will be Triple H you can change this in game later)

7. Additionally Change any Genderchange Value to 0 to put them in the Superstar Table (Here you should change all the Divas to males)

8. Back in WWE 2K15 Make the Game Save, I will do this by going to MY WWE and changing a Roster of a superstar and saving it.

9. To select these NPCs on the Select Screen go to the Diva's tab and it will be an Up & Down Scroll of Superstars.

10. Make sure to drop the included DLC50 Folder into your WWE 2K15 Folder, Normally located in C:\Steam\steamapps\common\WWE 2K15

11. This will add 6 pac files to the C:\Steam\steamapps\common\WWE 2K15\DLC50\pac\ch
ch43602.pac
ch43702.pac
ch43802.pac
ch43902.pac
ch44002.pac
ch44102.pac

12. All Done

(Taken from the README file, credits to pozzum)

Now go to Create a Wrestler Mode and choose "New" and then "Superstar"

You'll find all the Divas as Males. Choose one of them and you'll see that she now is considered as a male according to the game, and you will be able to fully customise her.

You will still use deafult faces, as I said earlier, but it's still better than nothing.