A Donner is a monster resulting from a human being resorting to cannibalism, typically during famines or winter tragedies. In transmuting into a Donner, the individual becomes almost immortal, as long as they continue to consume flesh and blood, to which they will have an unending hunger to do so. Failure to maintain this cannibalistic diet will result in their physical health rapidly deteriorating. However, with adequate and frequent meals, a Donner will maintain the ability to regenerate from normally fatal injuries, and they will not seem to age.
Upon transformation, a Donner loses a substantial amount of their humanity. Their heart freezes to a stop, and becomes mummified in ice. Any rosy warmth fades from their skin, rendering them pale as a corpse, and just as cold as one. While they retain some lean muscle, most of their fat is lost, leaving them to have an appearance ranging from just appearing skinny to appearing gaunt and emaciated. Their nails and teeth both thicken and sharpen, and are prone to easily staining with most individuals. Most Donners reek of decay and iron, and they often feast upon living flesh frequent enough to prevent the stench from ever leaving.
They are bloodlusting, and can be tripped into a feeding frenzy when under intense emotional stress, to which the sight and taste of blood is one of the few things that could stabilize them again.
Donners get their name from the most noteworthy incident resulting in several transmutations in rapid succession: the Donner-Reed Party over the winter of 1846 to 1847. As Donners were previously isolated, rare, and typically reclusive due to their indiscriminate bloodlust, the monster community did not formally recognize them until this time, to which the species adopted its name from. However, due to the infrequency of human cannibalism with the aggravating factor of low temperatures involved, Donners are few and far between in creation. Due to their unfavorable reputation and proclivity to uncontrollably hunger for the flesh and blood of any other living creature, they are often ostracized in monster communities.