Viserion is the first hatched dragon out of Daenerys dragons, three in all. Viserion is a cream colored dragon with gold accents, and a very cute face. Viserion was named after the Targaryen family names often starting with "Vis", this name mainly being named after Daenerys' brother Viserys.
What was that white dragon Dany had again?
The cream and gold Daenerys calls Viserion. Viserys was cruel and weak and frightened, yet he was her brother still. His dragon will do what he could not.