Ivan The eponymous main character, Ivan is a silverback gorilla who has lived in captivity for almost all of his life. Stella An elderly elephant who used to perform in circuses. Bob Bob is a stray dog who lives with Ivan. Mack Ivan's owner, he is in charge of the shopping mall where the animals are housed. George The man responsible for the care of the animals. Julia George's daughter who gets to know the animals. Ruby A baby elephant newly-arrived in the mall whom Ivan takes under his wing.