The BPS Rig, also known as Black Plasma Studios Rig, can be found on the Squared Media Discord: discord.gg/square (or below)
It can be easily downloaded with the command /righelp in the #help-and-support channel.
Please note:
There are different Versions of the Rig, it is recommended to use the newest Blender version with the newest Rig (currently BPS Rig v4), but older versions like BPS Rig v3 (for Blender 2.8 and newer) and BPS Rig v2 (for Blender 2.79 and newer) are also available.
