| Thomas | Andrews Jr. | A naval architect. |
| Alabaster | Brown | The vintner. Emily's neighbor. |
| Zoe | Cadogan | Sam's music designer. Marx's girlfriend. |
| Bong | Cha-Lee | Sam's grandmother. Anna's mother. |
| Anne | Chin | Chip's former leading lady. |
| Chris | Cornell | An American singer. |
| Dr. Edna | Daedakys | The optometrist. Sam's game name. |
| Miss | Elliot | George's assistant. |
| Simon | Freeman | A Junior at CalArts. Marx's game developer. |
| Sharyn | Friedman-Green | Sadie's mother. |
| Alice | Green | Sadie's older sister. |
| Steven | Green | Sadie's father. |
| Dong | Hyun | Sam's grandfather. Anna's father. |
| Anders | Larsson | Sam's math adviser. |
| Anna | Lee | Sam's mother. |
| Hanna | Levin | The only girl in the seminar. |
| Jonas | Lippman | The CEO of Cellar Door. |
| Lola | Maldonado | Sam's former schoolmate. |
| Emily | Marks | Sadie's game name. |
| Ludo Quintus | Marks-Daedalus | Emily's son. |
| Christopher | Marlowe | The man who was murdered in Master of Revels. |
| George | Masur | Sam's father. |
| Max | Matsumoto | A football player. |
| Mayor | Mazer | Sam's avatar. |
| Samson | Mazer | Protagonist. A game developer. Aka: S.A.M, Sam Masur. |
| Sadie | Miranda-Green | Sam's old friend. |
| Batia | Mizrah | Dov's wife. |
| Dov | Mizrah | The Advanced Games Seminar professor. Sadie's first boyfriend. |
| Telemachus | Mizrah | Dov's son. Aka: Telly. |
| Aaron | Opus | The head of OPUS computers. |
| Mary Lou | Retton | An American gymnast. |
| Abe | Rocket | Sadie's boyfriend. A band lead singer. |
| Antonio | Ruiz | Marx's game developer. Simon's lover. Aka: Ant. |
| Tiny | Tim | The hurt boy. |
| Dr. | Tybalt | Sam's doctor. |
| Aeran | Watanabe | Marx's mother. |
| Marx | Watanabe | Sam's roommate. |
| Ryu | Watanabe | Marx's father. |
| Naomi | Watanabe-Green | Sadie and Marx's daughter. |
| Chip | Willingham | A movie actor. |
| Adam | Worth | Charlotte's husband. |
| Charlotte | Worth | A game designer Marx met. |
| Ajda | | Marx's latest girlfriend. |
| Albert | | Sam's cousin. |
| Audrey | | The pretty brunette girl. |
| Destiny | | One of Sadie's students. |
| Florian | | One of the students in the seminar. |
| Freda | | Sadie's grandmother. |
| Hanami | | Ichigo's little sister. |
| Harry | | One of Sadie's students. |
| Ichigo | | Sam and Sadie's lead character in their game. |
| Jojo | | One of Sadie's students. |
| Keanu | | The Asian boy. |
| Kotaku | | The game reporter who interviewed Sam. |
| Marie | | The Revejeux team leader. |
| Midori | | Marx's high school best friend. |
| Mori | | One of Sadie's workers. |
| Pixel | | Emily's horse. |
| Rob | | One of Sadie's students. |
| Swan | | Marx's high school best friend. |
