Optimists are heroes that have the expectation that the favorable outcome will be the result in the actions they commit, whilst nullifying the negative consequences. They usually have a bright, jocular and positive attitude and tend to be more determined in conflicts they get involved in. The opposite of this is a Pessimist.

An excellent example of an Optimist would be Joy from Disney/Pixar's Inside Out, due to her positive outlook and determination, always pushing the other emotions into not giving up hope.