Overwatch features characters.
Overwatch (video game) . Overwatch assigns players into two teams of six , with each player selecting one of 24 pre-defined characters , called heroes , each with unique movement , attributes , and abilities , whose roles are divided into four categories : Offense , Defense , Tank , and Support . Additionally , Blizzard has developed and added new characters , maps , and game modes post-release , while stating that all Overwatch updates will remain free , with the only additional cost to players being microtransactions to earn additional cosmetic rewards .