Skyla's Swanna (Japanese: フウロのスワンナHuuro's Swanna) is a Pokémon owned by Skyla in the games, anime, and manga.
In the anime
In the main series
Swanna and Skyla
Swanna first appeared in Cilan Takes Flight!, where it was sent out alongside Skyla's other Pokémon during an Air Battle with a Trainer. During the Air Battle, it faced the Trainer's Zebstrika and lost. Since then, Swanna faced other challengers in the Air Battles and won some of them.
During an actual battle that Skyla had with Cilan, Swanna was the final Pokémon sent out, and it faced off against Cilan's Crustle. It first used Bubble Beam and then Brave Bird. After clashing Brave Bird with Rock Wrecker, Swanna defeated Crustle as she predicted in her Air Battle with him. Swanna faced Cilan's Stunfisk next. Swanna was unfazed by Stunfisk's Thunder Shock despite having a double type-disadvantage. After healing a burn caused by Stunfisk's Scald with Aqua Ring, Swanna went on to defeat it with Brave Bird, winning Skyla the battle.
In An Amazing Aerial Battle!, Swanna participated in an Air Battle with Ash's Pikachu. It ultimately achieved no result, as Skyla wanted Ash to come back to the Gym the next day. During Ash's Gym battle with Skyla, Swanna fought against Pikachu after defeating her Unfezant. It blocked Pikachu's Electric attacks with Aqua Ring, as well as dodging his Iron Tail and barely feeling his Quick Attack. With a combination of Hurricane and Brave Bird, Swanna managed to defeat Pikachu.
Swanna faced Tranquill next. It was hit by Tranquill's combination of Quick Attack and Air Cutter. Swanna used Hurricane which easily overpowered Tranquill's Gust and sent her falling to the ground. Tranquill evolved into Unfezant and got back up. Swanna chased Unfezant with Brave Bird but Unfezant easily dodges them all. Swanna was locked in by Unfezant and was finished by Unfezant's Aerial Ace, earning Ash the Jet Badge.
It reappeared in a flashback in Curtain Up, Unova League! while Ash was recalling the Gym Leaders he faced in his Unova journey.
Skyla would often save Swanna for last during her Air Battles and her battle against Cilan and Ash which shows that she has full trust in it compared to her Swoobat and Unfezant. Swanna takes after its Trainer as seen during Skyla's battle with Cilan where it mimicked her movements.
During Black's Gym battle with Skyla, Swanna was up next to battle Black's Nite after defeating her Swoobat. Swanna easily defeated Nite using a combination of Water Sport and Bubble Beam. It faced Black's Costa next and one Ancient Power from Costa took Swanna out in one hit.