Cresselia is a Pokémon that has a blue, swan-like body with a yellow underside. It has pink eyes, a dark pink, round tuft on its head, and a pointed, beak-like snout. There are yellow, crescent-shaped ornaments on the sides of its head that merge together in the back. It has a pointed, tail-like protrusion on its rear. Cresselia has glowing, pink, ring-like wings on its sides and back. The wings on its sides are solid dark pink, while the wing on its back is larger and consists of three shades of pink. These wings, especially its back wing, release shining particles and undulate beautifully around the quarter moon. It has paw-like protrusions resting on its chest.
A Cresselia first appeared in JN074, where she was targeted by Team Rocket's Matori Matrix. At the end of the episode, she was found by Chloe and Dawn. In JN075, Cresselia was wary of the approaching humans, but Chloe and Eevee managed to calm her down and tend her wounds. The Lunar Pokémon showed Chloe and Dawn her dream, in which she healed a town whose people had suffered from nightmares cause by Darkrai's presence. When they woke up, they were approached by Darkrai. Team Rocket soon appeared and attacked, but Darkrai held them off while the Pokémon Trainers fled with Cresselia. After the group united with Ash and Go, they were attacked by Matori's team. Team Rocket's Pokémon overwhelmed Ash's team, and Darkrai was injured by their electroshock device. Cresselia used Lunar Dance to heal him, fainting herself in the process. After defeating the villainous team, Darkrai shot a Dark Pulse into the night sky, clearing the obstructing cloud and revealing the bright full moon, which allowed Cresselia to recover with Moonlight. After the Trainers realized that Cresselia was not an enemy to Darkrai, but a friend who helped heal the victims of Darkrai's uncontrollable power, the two Pokémon peacefully returned to their respective islands.
Cresselia made her main series debut in Sleepless In Pre-Battle!. She normally returns to her shrine on Fullmoon Island during a certain time of the year when a Darkrai also comes by to cause nightmares. She may also leave her feathers, which people find to help stop the nightmares caused by Darkrai. In the episode, Cresselia helped Ash and the residents of Canalave City get better sleep by stopping Darkrai. Team Rocket attempted to catch Cresselia, but they were stopped when Dawn's Swinub evolved into Piloswine.
Cresselia appears on the Spear Pillar stage as one of three Pokémon who appear in the center (the others being Dialga and Palkia). Cresselia acts completely different than the other two in terms of attacks it uses. It will often use Psycho Cuts around the field, and sometimes shoot one large Psycho Cut as if it were a boomerang, hitting anyone that touches it.
A Lunar Pokémon. Cresselia appears on Fullmoon Island and, once discovered, flies around different areas of Sinnoh. Its signature move, Lunar Dance, causes Cresselia to faint but recovers all the HP and cures the status conditions of the next Pokémon its Trainer sends out. Cresselia excels at recovery techniques and is unusual in that it appears only in female form.
Cresselia's form seems to be based on a swan. Considering its crescent moon motif and the aurora-colored planetary rings around its body, it may originate from the constellation Cygnus. The rings also resemble the hagoromo gowns worn by the Tennin, spiritual beings in Japanese Buddhism, and its colour scheme of pink, yellow, and light blue, is the same as the dress worn by the Chinese goddess of the moon, Chang'e. Cresselia shares characteristics with Sarimanok, a legendary fowl with a profusely decorated head, feathered tail, and colorful wings that are said to be a symbol of good fortune.
Cresselia may be a combination of crescent (referring to the lunar phase) and Selene (Greek goddess of the Moon).
In other languages
From crescent (referring to a phase of the moon) and Selene (Greek goddess of the Moon)