Heartchi resembles a red upside-down heart with white eyes and a mouth.
On Virtual Pets
Keitai Kaitsuu! Tamagotchi Plus Akai
Heartchi serves as the male baby, and has a 50% chance of appearing when hatching or after marriage. After one hour, he will evolve into either Cheritchi or Kuribotchi, depending on what parents he had; he will always evolve into Cheritchi during the First Generation. A Heartchi born from Ojitchi and Otokitchi marrying will always evolve into Oyajitchi.
His name comes from the English word "heart".