Hela, Loki, Thor, and Valkyrie from Thor: Ragnarok 4K HD Wallpaper

Four characters are shown from the chest up, with a bright yellow and green background. On the left is Hela, wearing a green and black costume with a large headdress. Next to her is Loki, wearing a blue and gold costume and holding a dagger. In the center is Thor, wearing a red cape and armor. On the right is Valkyrie, wearing gold armor and with face paint.