Chammy

Chammy is a rabbit-like flying creature and one of the two deuteragonists (alongside Roppuru) who appears in Doraemon: The Records of Nobita, Spaceblazer and its remake, Doraemon: The Record of Nobita's Spaceblazer; and she also appears in 2005 anime episode, Nobita and the Star Floating Whale. She is Roppuru's companion and friend.

(Source: Doraemon Wiki)