Marl is the mother of Happy and the wife of Lucky in the Fairy Tail franchise.
Before Happy was born, she and her husband, Lucky, rebel against Chagot's order of taking Happy's egg to Earthland.
Marl, who was created by Hiro Mashima, has no information regarding any inspiration use to create her. She first appears in Fairy Tail volume 21 and episode 84. Her Japanese voice actress is Ayako Kawasumi. In the manga, she and her husband are not named, but in the anime, she is called Marl.
Interestingly, Lucky and Marl's voices are similar to Hiro Mashima's other characters Haru Glory and Elie in Rave Master. Their relationship is also very similar.
After Lucky invites Happy and Charle into their home, Marl treat them to a cooked fish lunch. She tells Happy and Charle that they are also fallen ones like them much to Lucy's annoyance. While Lucky and Happy did chores outside of the house, Marl and Charle make fruit juice. Marl notes that Charle has not smiled despite the fact she has a beautiful face. She asks Charle if there's anything she is struggling with.
As Happy and Charle relax at the porch, Marl asks who gave them names in Earthland. Only Happy says the name of his friend while Charle only says "friend." When Charle asks Marl if making friends with humans is wrong, Marl replies that making friends is not based upon race. Furthermore, Marl tells them that the shape of a loving heart is the same for everyone. She reassures Charle that she can open up her heart which Charle smiles. Marl calls Happy a brave knight.
When Charle tells Marl that the Exceeds think that they are angels, Marl replies that they are not angels because of Queen Chagot's order. Queen Chagot orders 100 eggs to be sent to Earthland. Marl states that they are only parents. Lucky barges in and reminds Happy that living is happiness. He tells them to leave his property.
As Happy and Charle soar in the sky, Marl asks Lucky if Charle is Happy's girlfriend. Lucky replies that he is too young about 100 years. They shed tears as they remember rebelling against the queen's order to take back Happy's egg. (anime only)
Like Happy, Marl also possesses an ability called Aera which enables her to fly.
In the anime, a flashback of Marl and Lucky fighting to get Happy's egg is reveal. This scene is not in the manga.