In canon, Harry is very good at resisting Imperius, even when cast by Voldemort himself.
In canon, Harry has also resisted even scarier magic cast by Voldemort.
Good point. Although there’s also whatever mind control spell Quirrel just used on Snape:
Alienis nervus mobile lignum
Which Google informs me is a quotation from Horace meaning ‘[puppet-]wires that others pull’.
Still, I agree it might be too hard to control Harry on short notice using intermediaries.
In canon, Harry is very good at resisting Imperius, even when cast by Voldemort himself.
In canon, Harry has also resisted even scarier magic cast by Voldemort.
Good point. Although there’s also whatever mind control spell Quirrel just used on Snape:
Which Google informs me is a quotation from Horace meaning ‘[puppet-]wires that others pull’.
Still, I agree it might be too hard to control Harry on short notice using intermediaries.