The Talking Rabbit is a rabbit that regained the memories of a previous life thanks to one of Bai Xiaochun's mystery pills.
He was not sane when he got his memories back, however, and had a compulsive need to repeat what others said, especially if it's supposed to be a secret, and scream it out to the world.
This caused unimaginable problems for Bai Xiaochun, and forced him to stop having monologues.
The rabbit was first used as a guinea pig by Bai Xiaochun to test his mysterious pills  . Upon eating the pill, the rabbit started to repeat everything he heard, causing endless disasters in the Spirit Stream Sect's south bank  and north bank  .
He also appears when Bai Xiaochun went into Blood Stream sect's Foundation Establishment Trials by fire.