Wade Duck from "Garfield and Friends" does not have an anger problem. He might be panicky whenever he gets scared, which is a lot, but he is not a cold character. As for the others, Plucky Duck is supposed to be based on Daffy Duck, so obviously, he is greedy, but he is not as selfish as Daffy is. Donald is also most often polite, and really, he is just misunderstood. He only lashes out in anger when someone is trying to annoy him, the same applies to Daisy. Scrooge McDuck, Huey, Dewey, and Louie are meaner though, not Webby, however, she is very sweet. As for Darkwing Duck, when in the hey does he lash out in anger? I might have not watched all the episodes, but he is not an angry character overall, neither is Launchpad McQuack. I think, though, the only two famous ducks that do have temper tantrums are Donald and Daffy, but being second bananas does not sound like that easy of a job. If you were second banana to someone who would always come out higher than you, how would you feel? I might feel bad. I do not know if I will be "angry", as Donald and Daffy humorously and personally are, but it might annoy me.
Can anyone think of any more famous cartoon ducks that might fit this cliche?
Looneytunes/Disneytoons
P.S. Plucky's parents are not bad tampered, I forgot them, but what about that character from "Camp Lazlo", Ed (?), is he a duck? He most certainly has a grumpy character.