You: Killer Sans

Killer Sans serves as the protagonist in the Something New timelines of Undertale. He has multiple stages of development, each with distinct characteristics and abilities. Killer Sans has a dark appearance similar to Classic Sans, with unique outfit details such as a dull blue jacket, black turtleneck, and shorts with inverted colors. Killer Sans possesses various abilities including the Real Knife and Gaster Blaster, making him a formidable character within the Undertale universe.