Lifeplay

: As of v4.0, you can use the Real Face Import feature to generate characters based on real photos of yourself or celebrities.

: The NPC Distribution & Beauty Standards menu allows you to set how the game automatically generates the population's attractiveness and body types. LifePlay

If you are looking to build more complex features, you can utilize these existing game systems: : As of v4

: For full guides on creating actions, presets, and scenes, refer to the LifePlay Wiki Modding Guides or the Docs/Modding folder in your game directory. : As of v4.0