|Home world:||Planet Earth (Cosmos Universe0|
|First appearance:||Ultraman Cosmos episode 57: Door of Snow|
Subtitle: Legendary Holy Beast (伝説聖獣, Densetsu Seijū?)
- Height: 60 m
- Weight: 60,000 t
- Origin: Beyond the door of the card
Gruanfan is a monster which lives in the world of memories. An old man named Tomano desires to brought it to his world with playing his memorable violin song to the door card. With his efforts finally came in success, Gruanfan appears where she stops the time (save the old man, the boy whom always assist Tomano, Ayano and Musashi) played the old man's memories of him happily with his family. Despite this, however, he cannot enter his memory and decided to leave it only as a remembrance. The boy takes Gruanfan's door frame and rise it high, trying to get her back to her dimension. Musashi sees this and transforms into Cosmos where he enlarges the door as the monster leaves. The old man vanishes since the person whom summons Gruanfan will cease to exist and gave the boy Gruanfan's portal frame as a gift for believing and helping him.
Powers and Abilities
- Time Stop: Gruanfan can stop time in a chosen locations at will.
- Memory Replay: Gruanfan can replay the memories of a person and allow them to enjoy the dream once again.
Any person whom summons Gruanfan will automatically cease to exist.