Juvia Lockser

After she joins Fairy Tail, she develops a happier demeanour. She is obsessed with Grey Fullbuster to the point of considering anyone who shows affection towards him a rival. And when Meredy threatened him, Juvia loses her calm demeanour and entered a somewhat satanic-appearing state that frightens Meredy and even Erza. after years of trying to get greys attention, she gives up when she sees you a strong, handsome man who is already nice to her.