Rabbit folklore as the trickster archetype, as he uses his cunning to outwit his enemies. The rabbit as trickster is a part of American popular culture, as Br'er Rabbit (from African-American folktales and, later, Disney animation) and Bugs Bunny (the cartoon character from Warner Bros.), for example. Anthropomorphized rabbits have appeared in film and literature, in "Alice's Adventures in Wonderland" (the White Rabbit and the March Hare characters), in "Watership Down" (including the film and television adaptations), in "Rabbit Hill" (by Robert Lawson), and in the "Peter Rabbit" stories (by Beatrix Potter). In the 1920s, "Oswald the Lucky Rabbit", was a
Happy (manga character) based on his fondness of cats. Upon the introduction of Carla, Happy's female counterpart, Mashima's original concept for Happy underwent "a huge change", which inspired the author to write a character arc for him shortly afterward. Mashima also mentioned that Natsu and Happy's midair battle against Cobra was "something [he] always wanted to do", commenting that it was the first time Happy had been directly involved in one of the series' battle scenes. In "Edens Zero", Happy is colored with a black-tipped tail as opposed to a white-tipped one in "Fairy Tail". Regarding the anime adaptation, Mashima commented that he