Kingdra

Kingdra is a Water/Dragon Type Pokémon introduced in Pokémon Gold and Silver. It is the evolved form of Seadra, and the final stage of the Horsea evolution line.

Origin
Kingdra takes inspiration from the weedy sea dragon, while still sharing some characteristics of a regular seahorse.

It's secondary Dragon-typing may be a reference to how seahorses are sometimes known in Japan as "tatsu-no-otoshigo", which means "dragon's child".

Reception
Kingdra received positive reception from fans for it's great type combination, granting it only one weakness prior to Generation VI.

Kingdra can function well as both a Swift Swim user, which gives it twice the speed in rain, as well as a user of Sniper, thanks to the improved critical hit ratio in recent games.

Kingdra has a reasonably balanced stat distribution and has access to some viably competitive attacks like Hydro Pump, Scald, Draco Meteor, Flash Cannon, and Ice Beam.