Panda

Panda was a 10 inch tall sentient, stuffed toy Panda who travelled with Iris Wildthyme. (BFIW: Wildthyme at Large)

Biography
Panda originally belonged to Tom, at a time when Tom was writing about his travels with Iris Wildthyme. After Iris returned to Earth, Panda and Tom joined Iris in her travels around the multiverse. (BFIW: Wildthyme at Large)

After Tom returned to Earth to live his life as a journalist, Panda still continued to travel with Iris. (BFIW: The Sound of Fear)

Personality
Panda was, at most times, bad tempered and took offense to people calling him a toy. Panda always carried a hip flask containing whisky with him as he felt that it kept him safe through dark times. (BFIW: The Two Irises)