A completely free and open-source plugin for anyone to use!
A plugin designed to help people that still likes to use the default roblox animator more than moon animator or blender.
Rig Merger 
Plugin (Limited to R6 Blocky avatars)
(Showcase!)
Q n’ A (Just in case.)
Q: Can I claim this as my own and not give credits?
Yes you can. It’s an old plugin of mine and I fixed it so I could release it to help developers that still likes
to use the roblox default animator. And besides it’s a community resource anyway 
Q: Can I modify the plugin?
Yes. You can modify the plugin in any way you want.
Q: How to create a character with clothes and hats?
A1: Create a rig with clothes and hats, select the customized rig, enable the feature “copy from selected character”, then press create
A2: Enable the feature “create character from input”, type in a player name of your choice, then press create
Q: How do you merge the created fake rigs?
A: You are going to need 1 real humanoid rig. It can be anything, then select the real rig, hold shift, select a fake rig, then press “merge”. (Note that you cant bulk merge the characters. You have to do it 1 by 1).
Hope this helps in any way possible!