Kabandha is a character from Hindu mythology. He was a demon who had a big mouth and no body. He could fly with his arms and could talk even though he had no head.
One day, a prince named Rama and his brother Lakshmana were passing through the forest when they met Kabandha. Kabandha asked for their help to get rid of his curse. The curse was that he had been turned into a demon with no body. Kabandha told Rama that if he helped him, he would help Rama find his wife who had been kidnapped by an evil king.
Rama used his special powers to shoot an arrow through Kabandha's mouth. This caused Kabandha's body to grow back and he became a good person. Kabandha then told Rama where his wife was being held and helped him to defeat the evil king and save his wife.
So, Kabandha was a demon who became good with the help of Rama and his brother. They used their special powers to help Kabandha and then he helped them in return by showing them where Rama's wife was being held.