| Biological Information
|Age:||1 (human years), 4 (dog years)|
|Breed:||Unknown; Possibly the same as Kaede's Puppy|
| Character Information
|First seen:||Manga: Chapter 7|
Anime: Episode 2
|Last seen:||Manga: Chapter 107|
Anime: Episode 13
|“||He's not really my pet... but since we're always together... we're friends.||”|
–Mayu, in Manga Chapter 11
Wanta is the small dog who stays by the side of Mayu. He is extremely loyal to her and those she chooses as family.
Mayu first encounters Wanta while homeless after fleeing her abusive parents, even feeding him at her own expense, despite the pair having only bread crumbs to eat most times. They hide out together on the beach where Lucy first confronts SAT agent Bando. Fleeing Kouta and Yuka because she no longer trusts people, Mayu briefly loses Wanta to a woman who claims to be his true owner. The woman refuses to let Mayu ever get near the puppy again because she is unkempt and dirty from living on the streets. Apparently, Wanta simply didn't like her very much, because he is soon scratching at the door of Maple House, just after Mayu agrees to stay there permanently. This person is not heard from again. Mayu makes sure to take care of Wanta, aided by Nana, who feeds him (and sometimes overfeeds him). All at Maple House are fond of Wanta, and even when Lucy is dominant over Nyu, Lucy like most Diclonius does not harm animals. It is also possible Wanta reminds her of her puppy, killed by bullies when she was just a child. Except in extreme weather, Wanta lives and stays in a small doghouse just outside the dining area entrance. Wanta is fiercely defensive of Mayu and the other Maple House residents, though his small size ends up keeping him from being a real threat to intruders. It seems that Wanta is simply from a very small breed of dog, as his size never seems to change throughout the series.
- The woman who claims Wanta is her dog calls him James.
- The first puppy, the one that Kaede cares for before it is killed, is sometimes drawn identically to Wanta, but in other instances is shown to have spots of brown on its coat.
- The name "Wanta" is likely a play on the words "want ya" or "want you" as in being loved, wanted, and appreciated.