Cylox

Cylox (NNIDs: TheCyloxCrew, TheCylox7Crew, TheCylox7Crew-2) was a nefarious Miiverse user that False-Reported many users in the New Super Luigi U Community, and the leader of the infamous 'Undercleaners' clan, which had attempted to remove all Undertale-based content from Miiverse.

Fortunately, they failed, as DoD Riley and Phantasma told the NSLUC who was behind the FRs, and Cylox would be banned shortly after. (Now all three of his accounts are banned, possibly perma'd.)