Dragonair (Pokémon)/Manga

In the Pokémon Adventures manga
Dragonair debuts in Long Live the Nidoking!, where it is seen as one of the Pokémon at Fuchsia City's.

A Dragonair appeared with its in Just a Spearow Carrier at the Indigo Plateau.

Lance owns two Dragonair, one of which he previously, the other stolen and brainwashed. The latter was sought by for ing, as it was offered as a prize in a surfing contest in Breath of the Dragonair Part 1, the former first appeared in Extricated from Exeggutor. Multiple other Dragonair also make up the army together with his multiple Aerodactyl, together they were used to attack the mainlands of Kanto. They first appeared in Playing Horsea.

Clair's Dragonair appeared in Debonaire Dragonair, where it was seen being used to battle Ryu's Seadra and win. It later cam with its Trainer to the Dragon's Den, where it battled and was defeated by Suicune.

A Dragonair appeared in The Last Battle XIII as one of the Pokémon sent to participate in the fight in Ilex Forest.

The rented a Dragonair, which was stolen by Guile Hideout in Lemme at 'Em, Lapras!.

A Dragonair appeared in a flashback in One Way or Another.

In the Pokémon Pocket Monsters manga
A Dragonair belonging to Clair appeared in The Ultimate Battle…?!.

In Pokémon Pocket Monsters, and  mentioned that a Dragonair's orbs are worth 300 million yen each.

Dragonair appeared in a fantasy from Lance's Dragonite in The Final Battle!! when Dragonite was telling a false story about how it met Lance.

Dragonair made an appearance in Good-Bye, Pikachu?! where it evolved from a Dratini. It managed to take out all of 's Pokémon. Dragonair evolved into a Dragonite when pulled its tail.

In the Pokémon Gotta Catch 'Em All manga
In Crystal Orb of Rainfall, Shu meets a Dragonair named Ryuko in the body of a human. He helps her find the blue orb she lost that used to be on her neck. Later in the manga, Shu captures a Dragonair of his own.