User blog comment:Codytlane/PE Proposal: Tabuu/@comment-26870630-20191031170555

I would say no.

First there are all of the arguments everyone else is bringing.

Also, if we assume all of the characters in SSB have the history and personality from their respective games, then Tabuu would fail the Heinous standard set by far more evil villains like Ridley or Ganondorf.