Sparkle (くるりんちゃん, Kururin-chan) Sparkle is a popstar from America. She had first appeared in the episode Pop Star along with her owner, Glitter. Sparkle is a snobbish and fame-loving hamster and would do anything to get riches.
In the Japanese version she ends her sentences with "Nano~". This is changed to "Haha~" in the English dub.
Owned by Glitter. Sparkle is a spoiled pop star hamster. She did not like the Ham-Hams at first, but she gradually became attached to them. In the Japanese episodes, Sparkle began to have a crush on Hamtaro, and has since then been trying to get him to notice her. She was unsuccessful, so after that she tried to push Hamtaro and Bijou together, but her feelings for Hamtaro came back again. For this and many other reasons, she sees Oshare as a rival.
Sparkle is a very spoiled and snobbish celebrity like her owner, Glitter. She likes fame, riches, etc. She is not the type to go outside and have adventures like when she was freaked out by the Ham-Ham Gang saying that she wanted to remain being a star. She is also quite selfish like when the Ham-Ham Gang were talking about her as an introduction but then changed the subject she shouted and said, "Can't we just talk about me again?!". Sparkle believes she is the cutest hamster in the world and has her own albums as her owner takes her everywhere. But after she gets attached to the Ham-Hams, she's shown to be kind, and cares for Bijou like a best friend, and gets annoyed at Oshare's oblivious and childish nature. She helps Bijou and Oshare finish the race with her in episode 289 "A Valentine Battle!"