Characters from the Synthesizer Community

1. Len Kagamine - Rin's twin who accidentally taps the Teleporter Cube situated in the Heart of Gold's Baldacchino. He is a prankster, which is always easily hidden by his intelligence, hence, he is always given the title : Intelligent Synthesizer. Together with him is his twin sister named Rin.

2. Rin Kagamine - Len's twin who is with his brother and their friends Miku and Kaito at the Heart of Gold Baldacchino. She and Miku and Kaito are implicated with the Teleporter Cube's action - which is to teleport them to a random world. Because of her optimistic attitude, she's always given the title : Cheery Synthesizer.

3. Miku Hatsune - Rin's closest friend in the Crypton Academy who is a bit shy but loves to sing in front of many people. She's within the radius of the Teleporter Cube's action, and so she joins the trouble created by Len. Because of her positive attitudes and her happy tunes and lively love songs, she's called the Love Synthesizer.

4. Kaito - Miku's childhood friend and Len's best friend who is also a prankster. He was called the Sweets Synthesizer because of his attachment to sweets and also because of his manly attributes that make girls fall in love.

5. Haku Yowane - the Evil Synthesizer who governs in the world of bad synthesizers just below the Synthesizer Community. After knowing the current situation in the Synthesizer Community about the four most popular Synthesizers lost in the midst of dimensions, she took the situation and had always tried to prevent the comeback of these 4 people to the Synthesizer Community.

6. Gakupo Kamui - the Noise Synthesizer who supports Haku's plan of preventing the 4 popular Synthesizers go back to the Synthesizer Community.

Characters from Earth :

1. Rieko Akihiko - the girl who founds the 4 Synthesizers and decided to take care of them seeing as she lives alone. She helps the 4 Synthesizers collect the Magic Keys needed to open a portion of the Grand Celestial Gate together with Shinichiro and Karen. She is guided by the 4 Synthesizers plus the Dere (pronounced as Deh-Reh) Synthesizer named Teto Kasane.

2. Kurumi Kiramoto - a rich girl who is overly attached to Len (although Len doesn't really like her) and is Rieko's ultimate school enemy. The Evil Synthesizer named Yowane Haku helps her achieve her goal of winning Len's heart and takes the form of a pink rag doll (which is similar to A-Ya's doll)

3. Shinichiro Kizukami - a boy who tries to help Rieko with her mission of collecting the Magic Keys for the 4 Synthesizers. He is also being guided by the Dere Synthesizer named Teto Kasane to be able to find the keys.

4. Karen Hazumi - the best friend of Rieko and supports the girls' mission of finding the way to make the 4 Synthesizers to go back. She is guided by the Youth Synthesizer Yuki Kaai.

5. Rei Akunogawa - the young servant of Kurumi who secretly in love with his master. He is guided by the Noise Synthesizer Gakupo Kamui to hinder Shinichiro and Karen's moves in finding the Magic Keys.

[other characters TBL~ ^^]