Great TV characters can make a lasting impression in just one season, leaving fans wanting more. Villains or supporting characters can shine and enrich a show's world with a single memorable season. Characters like The Priest in "Fleabag" or Wilf in "Doctor Who" quickly become fan favorites in just one season.

Great TV characters don't always need a lot of time to leave their mark, and they can feel like they've been part of a show for much longer than they actually have been. One season is plenty of time for a character to create a lasting impression, especially if the writers and the actor are on the same page. Sometimes, leaving fans wanting more makes a character even more popular.

Characters of all different types can shine in just one season. Often, it can be a villain who provides a temporary challenge, but it can also be a character...