DonaldPvP not known very much but i would never 1v1 him i like legit scared of him i land 2 hits on him while were PvPing then i am dead.
I use to fear hider21 until I finally decided to fight him and killed him. Probably the only one that I fear is Skillbill and Mcnerd but that was before we weren't teamed.
Daddy isn't really "scary" if you don't piss him off, but the thing is he never gets mad, he enjoys what he does, so obviously if you're a target of his you've done something to be his target, your fault.