A criminal? If so, how about Cruella de Vil - Wikipedia, the free encyclopedia?
Student or Learner
Can someone please give me an example of a crook in animated films?
Is Lord Farquaad in Shrek also a crook, ie a dishonest man?
He is mean and petty and rather foolish. I don't remember if he did anything illegal. He does not make me think "crook."
Rocky and Mugsy - Looney Tunes Wiki
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
In BrE, you don't necessarily need to break the law to be a crook, but you do need to do something bad. I haven't seen Shrek, but mean and foolish isn't enough for me- you need to be dishonest.