Deino is a dual-type Dark/Dragon Pokémon introduced in Generation V. It evolves into Zweilous starting at level 50, which evolves into Hydreigon starting at level 64. Take a look below for 23 amazing and interesting facts about Deino.

1. Deino is a small blue quadrupedal Pokemon with black fur covering its head and neck, concealing everything but its mouth from view.

2. The fur around its neck also has six purple spots encircling it, which resemble bruises.

3. The hair on the top of its head takes the shape of a single small horn.

4. It also has a short tail that appears to be bitten off.

5. As it is blind, it will bite at and eat anything that moves, and it has the vigor and energy to bite constantly and without stopping.

6. It never stops biting, making it dangerous to approach without taking precautions.

7. It will also ram anything, ensuring that it always has bruises all over it.

8. As seen in The Lonely Deino, it may rear up on its hind legs when happy.

9. Deino primarily lives in caves with abundant water sources.

10. Of all the Pokémon that evolve by level alone, Deino evolves to its final form later than any other Pokémon, evolving at level 64.

11. According to interviews with Ken Sugimori in Nintendo Dream, Deino and its evolutionary family were originally intended to be cyborg dragons with aspects of tanks. These Pokémon designs were scrapped until late in development, when they were revived and remade to be based on Yamata no Orochi.

12. Deino is the only Pokémon whose English name’s letters are in alphabetical order.

13. Deino and Zweilous are the only Pokémon who have Hustle as their only Ability.

14. Deino is based on a dragon, specifically an infant form of the Yamata no Orochi, or possibly even Zmey Gorynych.

15. Due to its blindness and the fact that it is only found near water in a cave, Deino may also be based on a cave salamander.

16. Deino may be a combination of dino (short for dinosaur) and ein (German for a, and part of the German for one, eins). It may also derive from δεινός deinos (Ancient Greek for terrible). It may also refer to dinosaurs and other prehistoric animals such as Deinosuchus and Deinonychus. Deino is also the name of one of the Graeae, the three sisters in Greek mythology who shared one interchangeable eye, leaving two blind while one could see.

17. Three Deino debuted in The Lonely Deino!, under the care of Bobby, who was looking after them for their Trainers. Two of the Deino were very rambunctious, while the third was shy and refused to eat. Iris tried to use her experience with Dragon-types to help it feel more comfortable around strangers. This Deino reappeared in a flashback in Explorers of the Hero’s Ruin!.

18. A Trainer’s Deino made a cameo appearance in Climbing the Tower of Success!.

19. A Trainer’s Deino appeared in Curtain Up, Unova League!.

20. A Trainer’s Deino appeared in a flashback in Survival of the Striaton Gym!.

21. A Deino appeared in the Pokémon Black Version 2 and Pokémon White Version 2 Animated Trailer, under the ownership of a resident of Aspertia City.

22. A boy named Leo used a Deino to battle Cheren’s Unfezant in the quarterfinals of the Unova Pokémon League and lost. It first appeared in Hallway Hijinks and had evolved into Zweilous prior to PS545.

23. A Team Plasma Grunt used a Deino in a flashback in Unforgettable Memories. It fought against Hugh’s Purrloin and Trapinch after Hugh refused to listen to them when they convinced him that he was causing pain to his Pokémon. Deino was able to weaken Purrloin, forcing Hugh’s sister recall it to its Poké Ball, which was then taken by two Grunts afterwards.