Kuri-chan (キンちゃん), Kin-chan (クリちゃん), and Ton-chan (トンちゃん) are three characters in the Anpanman anime.
The three characters are triplets based on chestnuts. Kin-chan is the one with the chestnut headwear. Kuri-chan is the one with the spiked green hat. And Ton-chan is the female one. They live in a mountain.
All three first appeared in the episode "Anpanman and Kuri, Kin, Ton" (November 16, 1992). They're also featured in few episodes since.