Hybrid AU

Hybrid AU (also known as Animal AU and Animalized AU) is an AU in the fandom where the Big Four are hybrids, portrayed as animals and have animal like abilities or parts.

About the AU
Spawning from fanart, this AU places the Big Four, and other such characters as Hybrids and have human characters animalized (or portrayed as animals) and animal and 'creature' characters humanized (portrayed as humans) for Pairings and other AUs. The four also have animal like parts on their bodies or their abilities.

Popular Spinoff AUs

 * Deertaur AU
 * Centaur AU
 * The Little Mermaid AU
 * Angel AU
 * Maximum Ride AU
 * Mortal Instruments AU
 * Monster AU

Animal AUs

 * Lions
 * Horses
 * Dinosaurs
 * Patronuses

Hiccup Horrendous Haddock III
Fans have infused Hiccup with Toothless as they turned him into a Night Fury Hybrid. They have also made him a human with dragon like abilities (because of his dragon like soul), like understanding what they are saying, breath fire or having dragon like eyes or turn him into a Night Fury.

In Modern AU and Ranch AU he is Toothless' owner, when his dragon is cast as a house pet (like a black cat or three legged dog) or a black, strong steed he rides from time to time.

Jack Frost
The animals Jack has been turn into by fans is a Polar Bear for Jarida and a White Ferret for Hijack. He is also portrayed as a Wolf (by placing the ears and tail on his human body) for Red Riding Hood AU, while his Patronus (in Hogwarts AU) takes the form of a Fox.

Merida DunBroch
Fans have given Merida the form of a cat or raccoon for Jarida. She can also be portrayed as a bear, because of the spell she used on her mother, for Beauty and the Beast AU and the form of her Patronus in Hogwarts AU.

Toothless
Toothless is portrayed as a Human or a Night Fury/human Hybrid for the Toothcup, Stormless, Toothjumper and Buckteeth pairings or a Cat or Dog for Modern AU and a Horse for Ranch AU.

Dragon Riders
The Dragon Riders are dragon Hybrids as fans infused them with their dragons. While their dragons are portrayed as Humans or other Animals, like cats, dogs or birds.

Stormfly
Stormfly is portrayed as Astrid's pet Bird or Dog for Modern AU and a Human or Deadly Nadder/human Hybrid for the Ermfly and Stormless pairings.

Guardians of Childhood
Toothiana, E. Aster Bunnymund and Sanderson Mansnoozie are portrayed as humans (humanized) or (normal) animals for Pairings and other AUs.