Dratini

Dratini is a Dragon Type Pokémon and is the Dragonite's first stage. Dratini evolves into Dragonair at lvl 30 and Dragonair evolves into Dragonite at lvl 55

Dratini is a Rare Pokémon and scientists didn't even think they existed at one point. Dratini is also evolves into Dragonite which is a Psuedo-Legendary Pokémon.