Does anyone know how I can make a game where certain players you choose pose?

So recently this guy made a game called vibe check where there's 2 people. One person has a guitar that knocks the 2nd guy's head off.

And you can also change the characters.

Can anyone put instructions how I can make a game like this?, Thanks.

https://www.roblox.com/games/4111795713/vibe-check

Ok, so, the person is using a ViewPortFrame, to load the character models, into an local environment, where the environment in this case, is to only render the models. Check that out here: https://developer.roblox.com/en-us/articles/viewportframe-gui For changing the character appearance, he probably used a built-in player function. More on that here: https://developer.roblox.com/en-us/api-reference/class/Player

Hope This Helped.