Betty

Betty (イヨカン) is one of Tibby's friends and a resident of Heaven World, encountered in Comet Land in Rhythm Heaven Megamix.

Story
Betty is one of Tibby's friends, and is encountered in Comet Land. When Betty meets Tibby, she says that she heard a spooky voice from his house and the sky has changed. She guesses the situation has gotten under her skin a bit. After clearing Comet Land, Tibby asks if he should go on a date with Betty, before saying that it was a joke.

Betty also appears in Rhythm Tengoku The Best Plus Comic 31テビリとイヨカン (Tibby and Betty), where she complains to Tibby about how his friends ate all her snacks, scribbled on the book she gave Bertram and that Philip stood her up on her date.