What is the name of Rayman's best friend, a blue frog-like creature? The answer is Globox.
Globox is Rayman's loyal companion and sidekick in the Rayman series. He is a large, blue, gentle creature whose nervous personality and comic mishaps contrast with Rayman's confidence and athletic abilities. Although often described as frog-like or toad-like, Globox is specifically identified in the series' lore as a Glute.
Globox first appeared in Rayman 2: The Great Escape, released in 1999. In that game, he helps Rayman escape from the Robo-Pirates by giving him a Silver Lum, which restores Rayman's powers. He also appears prominently in Rayman 3: Hoodlum Havoc and Rayman Origins, where his friendship with Rayman is central to the story.
A common mix-up is confusing Globox with André, a red Lum and the main instigator of the Hoodlum threat in Rayman 3. Betilla is a fairy who assists Rayman, while Murfy is a helpful guide. Neither is Rayman's best friend.