Angela Costain is the voice actor of Nabiki Tendo throughout most of the English dub as well as the voice for Ryonami. She took a break from the series during Season 6 to attend flight school. During this time her sister, Elaina Wotten-Costain, took over the role. Costain returned to voice Nabiki during Season 7.
Costain has also had roles in live action TV, but Ranma ½ remains her only anime-related role.
- Angela Costain at Anime News Network's Encyclopedia