Rikki is the main character and a mongoose. He spends most of the story defending the bungaloo from the snakes. The book also states that his war cry is "Rikk tikk tikki tikki tchk".
Darzee and his wife
This is where we first meet the son named teddy and also the mom. The mom gets nervous when it comes to animals. The son Teddy a little Brittish boy.
Nag, Nagaina, and Karait.
His dad always reassures the mom that Rikki will not hurt them when she gets scared. He also makes sure the snakes are really died when Rikki kills them by shooting Nagaina and hitting Karait with a stick.
Darzee is a bird with a beautiful voice and the book states that he isn't smart. His wife on his other hand is smart and her and Darzee are tailor birds.
Nag is a disasterous cobra with a wife named Nagaina. They are causing problems because they are making the garden dangerous and eating Darzee's eggs. They are also posing a threat to Teddy's family
Chuchundra is a muskrat who claims that Nag is everywhere. That is why he is afraid of going in the middle of Teddy's room.