Looking at two gaming roles

Creative director:
A creative director is the key person during the game development process who is responsible for the overall look and feel of the game as ensuring the quality and style of the game play. normally the creative director is the creator of the game and character and acts as a visionary.
the creative director also has to promote the game to executives who are not directly involved in the production such as the sale and marketing departments as well as handling the media outlets such as game magazines, television and websites. On the other hand they have to handle long hours with high levels of stress particularly during the final stages of the production making sure the game fulfills the initial goal. But in small or independent companies a creative director is not needed as they don't have enough money to afford plus they can make up numbers by doing two or three jobs.
Unlike other jobs creative directors don't stay in one place for very long as they mine not be well suited for the next game so they switch companies very often. an example o this is Alex Hutchinson who was the creative director on assassin creed 3 as well as being creative director, artist etc on these games:
'Duke Nukem Advance (2002), Take-two
'The Urbz: Sims in the City' (2004) Electronic Arts.inc
'Pitfall: The Lost Expedition' (2004), Activision
'The Sims 2' (2005), Electronic Arts.inc

Alex Hutchinson also demonstrates his ability to handle the media by doing interviews about Assassin creed 3 : http://www.computerandvideogames.com/363428/assassins-creed-iii-interview-alex-hutchinson/#

Animator for games:
the animator is responsible for the portrayal of movement and behavior of characters, creatures, elements, objects, scenery, elements, vegetation and environmental effects. Which also involves being responsible for the technical process of rigging and skinning of the characters. Animators work for development studios, publishes-owned and independent and specialist companies with their usually being permanent while other jobs like Creative directors work is on project-by-project basis.