Rikki- Tikki- Tavi is a "Mongoose" that Protects the Mom, the Dad, and the son named "Teddy" from the Snakes "Nag and Nagaina".
Nag and Nagaina are two bad guys and also poisonous snakes. They both try to fight and kill Rikki- Tikki- Tavi and the rest of the family.
The Father and Mother
Darzee and his wife are tailorbirds. Darzee has beautiful voice to sing, but that's all he does. Even if theirs a situation with Rikki- Tikki- Tavi he sings to his victory instead of helping him. Darzee's wife is the opposite. Darzee's wife helped Rikki- Tikki- Tavi distract Nagiana to help him destroy the cobra eggs.
Teddy is a British boy from a family. He and his Family have been attacked by the two snakes Nag, and Nagiana in only two days. He first found Rikki- Tikki- Tavi on the side of the road and thought he was dead. He wanted to have a funeral for him, but realized he was alive.
Teddy's Father and mother are typical. The mother is concerned when it comes to nature. The mother was scared about Rikki- Tikki- Tavi sleeping with Teddy. The mother fainted after Nagiana showed up on here veranda. The Father understands the Mongoose, so he doesn't have a problem with it sleeping with Teddy. The father helped Rikki- Tikki- Tavi fight the three serpents. He also knew what to do when Nagiana was giving them trouble.
Chuchundra is a Muskrat. Chuchundra is also cowardly and skittish. He only comes out at night because he fears that he will die from Nagiana and mistake for a Mongoose. We have to give him some credit because he did help Rikki- Tikki- Tavi with the information about Nag and Nagiana.