https://wccftech.com/boss-factory-saints-row-character-customization-tool-releasing-on-june-9th/

Renowned leaker Tom Henderson revealed that Volition will release a free Saints Row character customization tool called Boss Factory on June 9th, likely right after the game's appearance on Geoff Keighley's Summer Game Fest showcase.

As you would expect, Boss Factory allows players to create the main character to be used in Saints Row ahead of the game's launch date (set for August 23rd on PC, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series S|X). The options will be the same as in the actual game.