Viserion

Viserion is one of the dragons born in the Dothraki Sea, along with Drogon and Rhaegal. He is named after Daenerys Targaryen's brother, Viserys. He is distinguishable by his cream and gold colored scales, and red-orange wings.

Season 1
Daenerys is given three dragons eggs by Magister Illyrio Mopatis on the occasion of her wedding to Khal Drogo. She is drawn to these eggs and always keeps them in a chest with her. Viserys tries to steal them but is stopped by Ser Jorah Mormont.

He is born along with his two siblings after Daenerys has their eggs placed on the funeral pyre erected for her deceased husband, Khal Drogo. As she rises unharmed from the ashes of the pyre on the morning following the funeral, he climbs on her leg.

Season 2
Viserion is not shown as much, until he is stolen by Xaro Xhoan Daxos, along with Drogon and Rhaegal. As Daenerys enters the House of the Undying to retrieve them, she evetually finds her three dragons chained. Pyat Pree attempts to chain her with magic claiming that her dragons make his magic strong, and that she makes them stronger, thus she will stay with them for an eternity. She whispers to her dragons, "dracarys," her command to breathe fire, and the three of them burn Pyat Pree alive, releasing his magic.

Season 3
Viserion along with his brothers accompany Daenerys throughout her journey to Astapor and Yunkai. When Daenerys has a meeting with a Wise master of Yunkai he fights with his brother Drogon over a chunk of meat.

Physical appearance
The majority of his scales are golden, with cream colored markings under his neck and tail,  while his horns and spines are white. His wings are red orange, with black tints along the bones.

In the books
In the A Song of Ice and Fire novels, Viserion is much the same. In contrast to his namesake, Viserion is noted as being the best behaved of Daenerys' three dragons, even compared to his brother Rhaegal. He is also the most friendly to other people besides Daenerys herself. His primary coloration is specifically cream, though he is often referred to as simply the "white" dragon.