| 1 | | | White River High School - A publicly-funded institution. |
| | Mychal | Turner | Daisy's boyfriend. |
| | Daisy | Ramirez | Aza's best friend. |
| | Davis | Pickett | Russell's son. Aza's childhood friend and love interest. |
| | | | Clostridium Difficile - A bacterium that can cause
diarrhea. |
| | Aza | Holmes | Narrator. Protagonist. aka: Holmesy. |
| | Karen | Singh | Aza's doctor. |
| | Molly | Krauss | Daisy's acquaintance. |
| 2 | Mom | | Aza's mother. |
| | Harold | | A 16 year-old Toyota Corolla. Aza's car. |
| | Russell | Pickett | Founder of Pickett Engineering. Missing. |
| | Simon | Morris | Russell's lawyer. |
| | Dwight | Allen | A detective working on the Missing Person's case. |
| | Noah | Pickett | Russell's son. Davis's brother. |
| 3 | Elena | Ramirez | Daisy's sister. |
| | Lyle | | The Picketts's security. |
| 4 | Malik | Moore | Russell's zoologist. |
| | Rosa | | Russell's house manager. |
| 6 | Holly | | An Applebee's server. |
| | Kylo | Stan | A boy with bad fanfiction language. |
| | Sandra | Oliveros | Wrote about Russell's disappearance. |
| | Adam | Bitterley | The first to report Russell's disappearance. |
| 7 | Ms. | Park | Aza's biology teacher. |
| 9 | Tu-Quyen | Pham | A famous architecht. |
| 10 | Charles | Cheese | Somebody Daisy was going out with. |
| 11 | Josephine | Jackson | Aza's banker. |
| 12 | Liam | | Daisy's orange volkswagen beetle. |
| 13 | Mr. | Myers | A teacher acquainted with Aza's mother. |
| 18 | Franklin | | The firefighter who responded on Aza's car accident. |
| 19 | Nurse | Wallace | Aza's nurse. |
| 22 | Frances | Oliver | Curator of Prisoner 101. Aza's acquaintance. |
| | Kip | | A bearded man. |
