Kris Dreemurr is a human Lightner and the main protagonist of Deltarune. They are presumably the human Hero of Light in the Prophecy. In a Dark World, they function as the party's leader.During the events of Deltarune, Kris is mentioned to be an introvert.[2] Susie and King refer to Kris as a "quiet person," and Noelle is astonished if they converse about "anything."[3] After Kris's brother, Asriel, left for college, they became distant from their few friends. Kris's side of their shared bedroom is also strikingly bare. The shared game console is underneath Asriel's bed, and their old children's books are in Toriel 's classroom instead. Toriel has also mentioned that Kris is not normally energetic.[4] They have a history of not waking up on time, and often slept through the start of class.[5] Kris also preferred their mother driving them to and from school than walking.[6]

Contrary to Kris's apparent detachment, they do have a variety of interests. Kris has always been mischievous, pulling dark pranks such as covering themselves in ketchup and claiming it was blood. For example, Kris has the option to keep flushing the toilet before or after going to school, with Toriel replying: "You did not put a bath bomb in the toilet again, did you?"

Kris enjoys playing the piano. Prior to the game, they frequently played the hospital piano, despite it "missing most of the goodKris excels at ACTing in battles, and wields a sword that can transform into a shield when DEFENDing.In a Dark World, Kris's entire appearance transforms, making them resemble a knight. Kris dons silver armor: shoulder pauldrons, a cuirass, gauntlets, and boots. They wear a navy blue bodysuit underneath the set, and a pink cape drapes across their right shoulder. Finally, Kris's skin changes to cyan, and their hair transits to navy. The shading for their skin is also used for their cape, giving the illusion of blue stripes in a few of their sprites.) you were in the dark world and you see Kris