Telma
Telma is a woman in Twilight Princess who owns a bar in Castle Town. She tries her hardest to help Ilia when she arrives there with the Doctor. She also tries to help when Ilia finds the Zora Prince. After coming back to the bar as a human and finding Ilia and the Zora Prince, Telma speaks about a shaman in Kakariko Village who may be able to help. The three of them take the prince and set off to the village. At the village, you leave both Ilia and the Zora Prince in his care. Telma has a little thing for Renado. but he just leaves her hanging.
Later on in the game, you can return to her bar, where a group of four adventurers sit at a table and try to figure out about the different things happening around Hyrule. The table also contains a map which lables where you need to go for the dungeons that lead to the Mirror of Twilight shards. Telma sometimes helps with your quest, as well. She gives you an Invoice for the doctor to help Ilia.
It is noted that she strongly resembles the Gerudo women of past titles, possibly hinting that the reason for their absence from Twilight Princess is that they integrated with the Hylian culture. This is purely speculation, however, as the Gerudos could simply be in a deeper part of the desert that is unexplored in the game.
She also has a cat, Louise, who helps you. She leads you to Jovani, and the tower that Zelda is held captive in. The cat also steals a wooden figure that Ilia had.