Hopefully a complete list of characters that have appeared in the Runcible Jones series. Currently accurate as far as The Gate to Nowhere.
| Character | Description | Books |
| Ansible Jones | Runcie's father, he died in a magical fire five years before the series started. | Mentioned only. |
| Ancharium | The who came up with the plan that defeated the ghoolwyrms. | Mentioned only. |
| Balthazar | One of the Earth magicians. | TBC |
| Betham Offalgrinder | pg40 | TBC |
| Chancellor | A parliament official who hates everything to do with magic. | TBC |
| Cordelia Bugg | A teacher at Grindgrim. | TBC |
| Daphne Fulk | Jasper Fulk's mother. | TBC |
| Deodand | An old transportal, he allowed his masters to die in his stead and had his ability to go between removed as punishment. | TBC |
| Dulcie Cato | The leader of the girly gang at Grindgrim. | TGN |
| Flemm | One of the ghasts of Haunt Isle. | TBC |
| Gaspard | One of the Miluviand ghasts, nothing more than a floating head. | TGN |
| Gertrude Spender | pg14 | TBC |
| Giddion Taw | One of the other pupils at Grindgrim, Giddion has a talent for machines. | TBC |
| Gobb | One of the ghasts of Haunt Isle. | TBC |
| Hermes Ashmole | One of the Earth magicians. | TBC |
| Hfar Slessar Heunch | Thandimanilon's hulking manservant, with a twisted neck. | RJ |
| Horatio Fulk | Jasper Fulk's father. | TBC |
| Horrk | One of the ghasts of Haunt Isle. | TBC |
| Jac Sleeth | A brilliant prentice of Thandimnailon's, his only goal in life is to defeat Lord Shambles. | RJ |
| Jasinthe Noeller | The ancient hero who stole the power of magic from the ghastwyrm's lair. | Mentioned only. |
| Jasper Fulk | The ringleader of the bully group at Grindgrim. | RJ |
| Jay Kay | A student at Grindgrim, his nickname is Stick Insect. | TBC |
| Jud Thorp | A member of the bully group at Grindgrim, nicknamed "The Blob". | RJ |
| Lars Sparj | Thandimanilon's consort, a First Order wizard in his own right. | RJ |
| Ling Ho | A young girl at Grindgrim with a magical talent, she is good friends with Giddion. | TBC |
| Lugitroyd Melvinion Helfigor | A Second Order wizard (just), he is Parsifoe's companion. | RJ |
| Lunula Fludd | One of the Earth magicians. | TBC |
| Mariamhe Orpiment | A girl sent to Grindgrim for doing magic, she accompanies Runcible on his adventure in Iltior. | RJ |
| Mavis Spender | A girl at Grindgrim, her identical twin is Gertrude. | TBC |
| Millie Jones | Runcie's mother, she was sent to prison for having a copy of Ansible's book on magic. | TGN |
| Munz Sparj | Lars' brother, he was killed by Shambles and turned into a ghast. | TBC |
| Mundelf Beastmaster | An infamous man on Iltior, he claims that all beasts are his mindsakes. | TBC |
| Nibber | One of the Mulviand ghasts. Looks like a rotund man with a big hat and a bullet hole in his forehead. | TGN |
| Niddimaun | Thandimanilon's transportal. It was destroyed when Sleeth stole it and crashed it into the ground. | TGN |
| Nightingale, Mr & Mrs | Runcie's foster parents. They don't seem to have first names. | RJ |
| Parsifoe | A Second Order witch, Parsifoe resuced Runcie and Mariam when they first arrived in Iltior. She has a magic school in the tower of Thorasdil. | RJ |
| Patsy Patsy | A girl from Grindgrim. | TBC |
| Ross Pethick | A member of the bully group at Grindgrim. | RJ |
| Runcible Jones | A young boy who is obsessed with magic, ever since his father died. He is launched into an adventure in the land of Iltior when he finds a magical parchment. | RJ |
| Sehambel | The name Eath magicians call Lord Shambles. | TBC |
| Lord Shambles | The most powerful wizard in Iltior, he is a cruel and twisted man. Was once known as Skirrlydoun. | RJ |
| 'Shylock' Holmes | A member of the bully group at Grindgrim | RJ |
| Skinhead Lunt | A boy from Grindgrim. | TBC |
| Dr. Solomon Gravelax | The headmaster at Grindgrim. | TBC |
| Stinky Morton | A member of the bully group at Grindgrim | RJ |
| Thandimanilon | A wicked woman and a First Order witch, she runs the magic school at the tower of Miluviand. | RJ |
| Thormic Weasand | Leader of a band of cutthroat bounty hunters. | RJ |
| Tigris | A young prentice of Thandimanilon's, she was a friend of Sleeth's. She owes a debt to Thandimanilon. | RJ |
| Trounce | The sole survivor of the ancient massacre at Haunt Isle, he was a boy seer who made the foretelling. | Mentioned only. |
| Ullallial | Parsifoe's transportal, one of the oldest remaining. | RJ |
| Unggah | One of the Miluviand ghasts, he is a bow-legged rider with an arrow through his heart. | TGN |
| Ursie Muddlestone | A witch from the Isles, she witnessed Ansible's death. | Mentioned only. |
| Villivoin | Thandimanilon's new transportal, shaped like a frog. | TBC |
| Wyrmhilte | Daughter of the old ghastwyrm queen, Wyrmhilte seeks to return the wyrms to power. | RJ |
