Human Female Sabertooth, Succubus Eye Mage Team Sabertooth Sabertooth Guild, Succubus Eye Jiemma (Father)
Minerva is a Mage of the currently strongest Guild in Fiore, Sabertooth. Minerva speaks in an archaic, old form of Japanese. Befitting her formal speech, she is also very mature and wishes that the people around act accordingly.
(Source: Fairy Tail Wikia)