| A | B |
|---|
| Dynne | Dr. Dischord's assistant |
| Alec | the boy suspended in mid-air |
| Kakofonous A. Dischord | Doctor of Dissonance |
| Soundkeeper | ruler of the Valley of Sound |
| Chroma the Great | conductor of color |
| reality | how things really are |
| illusions | mirages |
| Rhyme and Reason | the banished princessess |
| Humbug | Milo's traveling companion to rescue the princessess |
| King Azaz | the ruler of Digitopolis |
| Officer Shrift | arrests Milo and Tock |
| Faintly Macabre | the king's aunt |
| Milo | a bored boy |
| Whether Man | who Milo meets in Expectations |
| the Doldrums | where nothing ever happens and nothing ever changes |
| Lethargarians | the residents of the Doldrums |
| Tock | a watchdog |
| the Duke of Definition | one of King Azaz's ministers |
