Hybrids do not have wings, they can have wings but for some reason, they either turn out too small for the body, or the body is too heavy for the wings to carry. A hybrid can have anything from a couple of scales, to horns, to a spine that can shoot spikes. If they are of the Alpha species (which cannot be mixed with any other species due to its superior DNA), they can bend the will of any other dragon and can use it's frosty breath to spray ice that can do more damage than a Fury. Most dragons have fire breathing abilities, unless it is a water class or a heavy weight. Heavy weights have wide frames and big muscles with razor sharp claws that can slice through tree tops and the like without a second thought.
The Changewing:
Boneknapper and his rider:
The very rare and ominous Fightmare:
A Gronkle, they were pretty common, they tend to be a bit wider than others:
Scauldron, it spits water that is boiling hot and can cook its target in seconds:
The Alpha or Bewilderbeast, this dragon has frosty breath that can freeze things in an instant, It can also impose its will upon other dragons:
A Fury, this dragon is the epitome of stealth and danger. It blasts blue fire and has razor sharp claws so that it can climb:
This is what a Horned Skull would look like if human: