Chara from Undertale HD Wallpaper

The image is split down the middle, showing two halves of a character's face and upper body. The left side depicts a character with closed eyes and a neutral expression, wearing a blue shirt with pink stripes and a red pixelated heart. The right side shows the same character with wide, red eyes, a sinister smile, and a green shirt with a yellow stripe. The background is a solid brown color.