Ly is a fairy and a close friend of Rayman. She was created by Polokus and made her first appearance in Rayman 2: The Great Escape. She can create silver lums, which gives Rayman new powers throughout the game. Ly has a calm and conteplative personality, though shows a strong playful streak.
Ly has a feline tail, and is shown running on all fours in Rayman 2 and in official artwork.
Ly usually "speaks" with an ethereal, echoed voice and shows no mouth movement, this might indicate she usually uses telepathy, especially since her lines in "The Walk of Life" and "The Walk of Power" are spoken normally.
- Rayman 2: The Great Escape/Rayman 2: Revolution - She helped Rayman by giving him powers to succeed later on in the game.
- Rayman 3: Hoodlum Havoc - Although she physically does not appear, a statue exists of her in a secret room filled with some goodies in the last part of The Longest Shortcut.
- She appears on the covers of Rayman Arena/Rush, but is not playable.
- Rayman 3 (Game Boy Advance) - She gives Rayman new powers and gives him news on Globox's whereabouts.
- Rayman Raving Rabbids (Game Boy Advance)- She gives Rayman special costumes and explains what the Rabbids want.
- Ly likes to juggle.