Klonoa 2: Lunatea's Veil was released for the PlayStation 2 in 2001 with moderate success. Though it was very similar in style and execution to the previous game, it was developed for the more sophisticated Game Boy Advance hardware and was also available in North America and Europe. Despite lacking the artful style of the first game, Moonlight Museum set the standard for the approaching Game Boy Advance titles like Klonoa: Empire of Dreams, which came out two years later. It is Klonoa's first handheld appearance and his first fully two-dimensional one. Klonoa's second appearance, Klonoa: Moonlight Museum was released solely in Japan for the Japanese-only WonderSwan handheld system in 1999. It was described as 2.5D to distinguish it between other games that relied on one or the other. It was one of the first PlayStation platform games to feature two-dimensional character artwork on a rendered, three-dimensional backdrop. Klonoa: Door to Phantomile was released in late 1997 in Japan and in 1998 in North America and Europe, it was critically well received by numerous gaming publications and magazines. He added a large hat with a Pac-Man emblem on it and collar to give the character a childlike and energetic quality. His next design was created with characteristically animal eyes and long ears, as Arai felt that a person's eyes and silhouette are the features noticed when they are first met. However, he felt that the lack of color did not seem tasteful, and dropped the design.

Arai's first design, 'Shady', had a shadow-like appearance. His attitude is innocent and even a bit naive, as shown in Klonoa 2: Lunatea's Veil.

He is easily able to befriend characters along the way who support his cause. Wanting to be a hero, he is young and good-hearted and is willing to go against all odds to make sure justice is served. He has Namco's mascot Pac-Man on the side of his blue hat. His traditional voice actor is Kumiko Watanabe, he is voiced by Eric Stitt in the English version of the remake of the first game.

He is described within the games and manga as a 'Dream Traveler', who is fated to travel to various places where the state of dreams is in danger, but he himself is not aware of that. The character Klonoa has features of a dog, cat, and rabbit but is not explicitly any particular animal. The character and series were launched with the release of Klonoa: Door to Phantomile for the PlayStation in 1997. Klonoa ( クロノア, Kuronoa) is a video game series created by Namco and Klonoa Works, as well as the name of the titular character of the series. PlayStation, WonderSwan, PlayStation 2, Game Boy Advance, Wii

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