Mavis Vermillion

Mavis Vermilion (メイビス ヴァーミリオン Meibisu Vāmirion) was the first master of the Fairy Tail Guild.

History
Mavis was the one who selected Purehito to be the second guild master of Fairy Tail.

Tenrou Island arc
Mavis somehow telepathically comforts Cana after she grew angry and upset with herself for betraying her friends and guild by putting the S-Class exam first, and then proceeds to lend Cana the Fairy Glitter Magic.

Quotes
(To Cana Alberona)"If that's the case, then you have nothing to be afraid of. Mistakes are not shackles that stops a person's progress. They are the fuel that raises the heart. Now... go forth, I lend thee the Fairy Glitter."