The game artist
The game artist is responsible for creating in-game art: characters, animations, game objects, backgrounds, environments, and game interface.
No need to say, artwork is very important in a videogame! Graphics are the most prominent characteristic of a videogame and they are also important from a marketing point of view. Most of the time, customers are attracted to a title by its visual characteristics. When judging a game from its preview, if gameplay is unavailable, the game is judged solely on its visual appeal.
In the early days of computer videogames, a single artist could cover all the graphic needs of a game. As time passed, it required more people to be involved in the creation of the graphics for a title, and this lead to the creation of groups of artists as part of the development team.
In a mobile team it is very likely that graphics will be made by two to three people with a separation of duties, such as one artist on 2D graphics (concept, sprites, game interface...