QUICK INFO DUMP, BECAUSE THIS IS MY INTERPRETATION OF NOLI!! 

Noli discovered the Void Star a century or so ago, and practiced it's power to make a cult; Followers of the Null Robloxian. It worked a bit like a death cult, because the goal was to become so null that they could go to the Void like Noli could.. But the Void had no oxygen, so people who'd go there and fail to live, got deemed as unworthy. The cult got shutdown and Noli retreated to the Void. 

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Pfp: @FR0STBIT7EN on Roblox