Emblems are a feature found in Asphalt 8: Airborne.
In essence, they are pictures that you can choose to represent your profile if you do not want to add a photo from your library. They serve no other purpose, and are not unlockables. All emblems are available at the start of the game to choose from.
There are 96 Emblems in total. They are made up of 24 basic designs, each with 4 different backgrounds for each design.