Ly is a fairy, and a close friend of Rayman. She made her first appearance in Rayman 2: The Great Escape. She can create silver lums, which gives Rayman new powers throughout the game. She is kind and serious, and likes to experiment with her magical powers in her spare time. She may look weak, but she can be dangerous if she has to be.
- 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 Rush/Arena, but is not playable.
- Rayman 3 GBA - She also appears by giving Rayman new powers and giving him news on where is Globox
- Rayman Raving Rabbids GBA - She again appears by giving Rayman Special Costumes and explaining what the Rabbids wanted
- She looks like a cross-breed of a human elf and a wolf, as she has pointed ears showing, and a tail peeking out of her jumpsuit. She is also seen running on all fours in Rayman 2/Rayman 3D when you find a bonus level, such as the "Walk of Life".