Sans was created from the light excluded by the tree of dreams, better known as the tree of feelings.He's a light being in a skeletal vessel that is destined to be the future Guardian of Feelings. Dream has no monster or human soul. He possesses all the good emotions of every living thing, including monsters, humans, etc. Dream works together with Ink and Swap. Native language is Spanish from Spain. He has yellow eyes, and a yellow blush.. Cuz, yeah, canon.