Kaa is the wise python in The Jungle Book who helps Mowgli, notably rescuing him from the Bandar-log (monkey people). Ikki is a porcupine, Chil is a kite bird, and Baloo is the bear.
Kaa is the large python in 'The Jungle Book' who, despite his intimidating hypnotic powers, becomes a wise ally and friend to Mowgli, helping rescue him on multiple occasions. Baloo is the bear who is also a friend but is not a snake, while Ikki and Chil are minor animal characters, not Mowgli's snake companion.