Mugen

MUGEN is a unnamed group created by the first member and founder Mugen666666666666666 which has been on ROBLOX since 2014.

It constantly harasses as many ROBLOX users as possible via bullying, loud noises, forum raiding, making anti viruses delete ROBLOX by forcing it to take up heap loads of memory in seconds, and even account stealing from phishing. This has now been proven to be false.

There have been over 300 members in total, mainly accounts created for spaming inboxes of thousands of ROBLOX users.

They have weird games that are fun and well made

Current Group:

https://www.roblox.com/Groups/Group.aspx?gid=3061772