1 is possible, 2 strikes me as unlikely (how bad of a week was it? I didn't get that sense). 3 doesn't make sense — this has nothing to do with trademark law. A logo is a 'mark' that identifies a brand, but a voice is not a 'mark.'
>>gnicho+(OP)
#2 because they're humans and humans act emotionally — it's entirely possible for them to just go "aaaa" like all the people in comments sections do regularly.
#3 famous people do seem to have some control over their likeness; I don't know how real that control is or anything about how it works, just that it looks like this from the outside. IANAL, so treat that as a claim of analogy not literal.