Slitherwing

Species: Slitherwing
Class: Mystery
Personality: Toxic to the Touch
About: Giant, winged snakes with venomous scales and fangs, Slitherwings are truly the stuff of nightmares! As if one Slitherwing wasn't deadly enough, the poisonous dragons tend to hunt in packs. Like regular snakes, a Slitherwing's bright coloration indicates its venom level. The more colorful the Slitherwing, the deadlier the attack. These oversized serpents slither at top speeds, sedate prey with the toxins in their bites, and drag them back to their pit for dinner. Equally aggressive against Vikings and dragons, Slitherwings fear only one thing: Fire.

Kommo-o

Type: Dragon-Fighting
Ability: Bulletproof
            Soundproof
Hidden Ability: Overcoat
Possible Moves: Clanging Scales, Sky Uppercut, Brutal Swing, Draco Meteor
Alola Pokedex Entry: When it spots enemies, it threatens them by jingling the scales on its tail. Weak opponents will crack and flee in panic.

Triple Stryke

Class: Strike
Personality: Triple Threat
Hidden Abilities: The Triple Stryke's braided tail is a force to be reckoned with, but each individual tail also produces its own unique venom: A sting from the firsts tail numbs combatants, the second disorients them with mild hallucinogens, and the third creates an agonizing sensation of burning in your very blood!
About: Displaying an ornery disposition from the time of their hatching, Triple Strykes make the ideal champions in underground dragon combat arenas. With their barbed tails that deflect attacks, their intense fire blasts that blind opponents, and their tail triad that braids into a single, powerful weapon, a Triple Stryke wins most bouts on intimidation alone. But victory sometimes breeds vanity, and exploiting this overconfidence is often the only way to defeat a Triple Stryke in battle.

Death Song

Class: Mystery

Personality: Enticing and siren-like, this species of dragon is decidedly solitary.

Fire Type: Rather than spit fire, Death Songs spew an amber-like substance, which hardens into a cocoon and traps dragons and humans alike.

Hidden Abilities: Similar to its distant Jurassic ancestor, the Death Song possesses extra cervical vertebrae which, when expanded into frills, allow it to project its call to specific targets up to 1 mile away.

Rather than shooting fire, the Death Song spits thick, amber-like substance at its prey to form an impenetrable cocoon. 

Although deceptively beautiful in appearance and melody, the Death Song has a lethal quality that is reminiscent of the Black Widow. Inhabiting a lush island beyond the archipelago, this dragon vocalizes its beautiful and hypnotic siren call in order to lure other dragons, which it then targets as prey. Rather than using fire to attack, the Death Song shoots out a liquid substance which traps and preserves victims as it hardens into a stiff amber cocoon that is penetrable only by flame. Typically, the Death Song chooses to entrap dragons only, but it also preys upon any humans unfortunate enough to make their way to its island. Its key weaknesses are Thunderdrums, which find themselves mostly immune to the Death Song's lethal lullaby due to poor hearing, and small enclosed spaces, which can render it vulnerable to its own song.

Noibat & Noivern

Noibat

Sound Wave Pokemon

Type: Flying-Dragon

Ability: Frisk

            Infiltrator

Hidden Ability: Telepathy

Possible Moves: Supersonic, Gust, Air Cutter, Razor Wind

Kalos Pokedex Entry: They live in pitch-black caves. Their enormous ears can emit ultrasonic waves of 200,000 hertz.

Noivern

Sound Wave Pokemon

Type: Flying-Dragon
Ability: Frisk
            Infiltrator
Hidden Ability: Telepathy
Possible Moves: Air Slash, Hurricane, Dragon Pulse, Boomburst
Kalos Pokedex Entry: They fly around on moonless nights and attack careless prey. Nothing can beat them in a battle in the dark.

Skrill

Class: Strike
Personality: Belligerent and as unpredictable as lightning strikes
Fire Type: Summons lightning
Hidden Abilities: They can hibernate in icy glaciers for decades at a time, and emerge as fierce as the day they were frozen.

One of the most mysterious and feared species in the Book of Dragons, the Skrill is aggressive, powerful, and nearly untrainable. Skrills do not breathe fire. Instead, they channel lightning down their metallic spines, firing it from their mouths in a shower of destructive blasts. They can also store this electrical power in their bodies and release it later on. Because of this unique firepower, Skrills tend to gravitate towards stormy weather. If you find yourself flying through a thunderstorm, watch out! Skrills are also tough. They can take a lot of damage in battle, and give as good as they get. However, the Skrill has one weakness...it cannot fire its lightning from the water. Force a Skrill into the ocean and it loses the upper hand.

Goomy and Goodra

Name: Goomy

Type: Dragon

Ability: Sap Sipper/Hydration

Hidden Ability: Gooey

Possible Moves: Tackle, Protect, Bide, Dragon Breath

Kalos Pokedex Entry: The weakest Dragon-type Pokemon, it lives in damp, shady places, so its body doesn't dry out.

            

Name: Goodra

Type: Dragon

Ability: Sap Sipper/Hydration

Hidden Ability: Gooey

Possible Moves: Dragon Breath, Body Slam, Muddy Water, Dragon Pulse

Kalos Pokedex Entry: This very friendly Dragon-type Pokemon will hug its beloved Trainer, leaving that Trainer covered in sticky slime.