The Dragon of Fire is named Kimiko. The Asian character 'ko' (shaped like a 'k' with a line at the side) means 'fire'.
The name of the Dragon of Wind is Raimundo. 'Rai' means 'Thunder' in Japanese, and through Season Two of the show Raimundo's main attack is called 'Typhoon Boom' and sounds like Thunder.
The 'Fountain of Hui' is named after Christy Hui, who is credited as creator of the show.