Cygnus appears simply as a brilliant, white swan with a long neck and wings. His beak is orange, he feet are black and he has black markings around his beak and eyes. The rest of his body has light blue markings over his feathers.
Cygnus maintains a close relationships with Odette and her other guardian spirit, Will-o'-the-Wisp.
- Water manipulation: As a water spirit, Cygnus is capable of manipulating water in all liquid forms and uses his water abilities to help Odette with her smithing.
- Bubble generation: Cygnus can produce bubbles for both offensive and defensive capabilities. They can be used as shields, explosives, have acidic or poisonous traits or even be used to allow individuals to breath underwater.
- Water spout generation: Cygnus can produce large water spouts.
- Water jet proficiency: Cygnus is particularly skilled in creating powerful jets of water.
- Feather projection: Cygnus project his feathers as razor-sharp projectile weapons.
- Aquatic adaptation: Cygnus can easily adapt to underwater environments.
- Swan Lake: Cygnus' power is increased while near lakes.
- Cygnus is based on the constellation of the same name.