Harry Potter
The "Boy Who Lived" and savior of the wizarding world, who defeated Lord Voldemort in the Battle of Hogwarts. Harry Potter is now the Head of Magical Law Enforcement. Harry struggles as a parent; he tries to be closer to his son Albus, but fails to connect.
Hermione Granger
The Minister for Magic, wife of Ron, and mother to Rose and Hugo Granger-Weasley. She is hardworking and clever.
Ron Weasley
Hermione’s husband. Ron runs a joke shop with his brother George called Weasleys’ Wizard Wheezes. Ron is a stay-at-home dad since his wife is busy working for the Ministry of Magic.
Draco Malfoy
Son of Lucius and Narcissa Malfoy. Though the Malfoy family has always believed in blood purity, he is devoted to being a father, raising his son to be kinder and more accepting of other people. Draco's wife Astoria dies halfway through the play.
Ginny Potter
Harry Potter’s wife and Ron’s younger sister. She is the editor of the Sports section of the Daily Prophet. Harry describes his wife as bold, fierce, and funny.
Albus Severus Potter
Harry and Ginny Potter’s middle child, the only one of the three Potter children to be sorted into Slytherin House. He is the best friend of Scorpius Malfoy, and a rebellious soul.
Rose Granger-Weasley
Hermione and Ron’s daughter. She is a popular student and chaser for the Gryffindor Quidditch team. After arriving at Hogwarts and being sorted into different houses she drifts away from her cousin Albus.
James Sirius Potter Jr.
Harry and Ginny Potter’s eldest son for whom things come effortlessly. Being the eldest son, James inherited his father’s invisibility cloak.
Lily Luna Potter
Harry and Ginny’s youngest daughter. In the beginning of the play, she was too young to go to Hogwarts. She is sorted into Gryffindor.
Scorpius Malfoy
Son of Draco Malfoy. Scorpius is a Slytherin, though he is sweet, geeky, and more of a follower than a leader. After a rumor circulates that he is the son of Voldemort, Scorpius is marginalized by the rest of the Hogwarts students. However, he has one friend, Albus Potter.
Professor Minerva McGonagall
Headmistress at Hogwarts during Albus Potter’s years at Hogwarts.
Madam Hooch
The first-year flying teacher.
Cedric Diggory
A Hufflepuff student when Harry Potter studied at Hogwarts School of Witchcraft and Wizardry. Cedric was one of the competitors of the Triwizard Tournament but was murdered by Lord Voldemort shortly after winning. After Albus and Scorpius made sure that Cedric lost the Tournament, Cedric became an angry man. His anger turns him into a Death Eater, and he later kills Neville Longbottom.
Amos Diggory
Cedric Diggory’s father, now an old man. Amos always blamed Harry for the death of his son, and with his niece and caretaker, Delphi, decide to pay Harry Potter a visit. Amos asks Harry to go back in time and save his son from being killed back in 1995.
Lord Voldemort
The most powerful, evil sorcerer in the wizarding world. When Harry was a baby, Voldemort entered his home in Godric's Hollow to kill him. However, the love of Lily Potter caused the killing curse to rebound to Voldemort, killing him instantly. After the third Triwizard Tournament, Voldemort was resurrected by using Harry Potter’s blood. A couple of years later, the Battle of Hogwarts occurred and Harry Potter defeated Voldemort.
Delphi
Though she appears as an awkward, clumsy caretaker of Amos Diggory, she is in fact the daughter of Lord Voldemort and Bellatrix Lestrange, born before the Battle of Hogwarts. Delphi is an orphan, similar to her father. Delphi used the Confundus Charm on Amos Diggory in order to pass as his niece.
Severus Snape
Potions Professor at Hogwarts who was murdered by Voldemort during the Battle of Hogwarts. Snape devoted his life to Albus Dumbledore after the death of Harry's mother Lily Potter at Voldemort's hands. He turned spy for Dumbledore and became a Death Eater, and was eventually killed by Voldemort. Harry considers Snape to be one of the bravest man he ever knew. Albus Severus Potter is named after Severus Snape.
Albus Dumbledore
Former Hogwarts headmaster who was killed by Severus Snape before the Battle of Hogwarts. Dumbledore played a paternal role in Harry’s life. In the play, Harry talks to Dumbledore via portrait, telling Harry that love has blinded him.
Polly Chapman
Hogwarts student. In the timeline of the Scorpion King, Polly asked Scorpius if he would go with her to the Blood Ball.
Trolley Witch
Hired one hundred and ninety years back when the Hogwarts Express first began. She sells sweets on the trolly, but her job description also includes making sure every student arrives at their destination.
Petunia Dursley
Harry Potter’s aunt. After James and Lily Potter were killed by Lord Voldemort, Petunia received the custody of Harry Potter, being Harry’s only relative. She always detested magic.
Dudley Dursley
Harry Potter’s spoiled cousin.
Vernon Dursley
Harry Potter’s uncle and Petunia’s husband.
Hagrid
Keeper of Keys at Hogwarts. On the night of James and Lily Potter’s death, Hagrid delivers him to live at Privet Drive with the Dursley's on Dumbledore's orders.
Dolores Umbridge
A Ministry bureaucrat and loathed Hogwarts professor in Harry's day, she is presently serving in Azkaban. When the past is changed, she becomes the Hogwarts headmaster after Harry Potter and members of Dumbledore’s Army are killed. She demands order and respect even from Scorpius. In the end, Umbridge discovers Snape and Scorpius's true allegiance, and she begins to attack Snape, but he defeats her.
Moaning Myrtle
Full name Myrtle Elizabeth Warren, a former student at Hogwarts. She was killed in 1943 by a Basilisk on the orders of Tom Riddle (Lord Voldemort). Her ghost haunts the girl’s bathroom, where she was killed.
James Potter Sr.
Harry Potter’s father who died protecting his wife and son from Lord Voldemort.
Lily Potter Sr.
Harry Potter’s mother whose love protected him when Lord Voldemort cast a Killing Curse.
Viktor Krum
Durmstrang student who participates in the Triwizard Tournament in 1994. Viktor was Hermione’s date to the Yule Ball.
Bane
A centaur who has philosophical Divination skills, he is protective of the Forbidden Forrest. He tells Harry Potter that there is a dangerous cloud around Albus Potter.
Ludo Bagman
The Triwizard Tournament moderator
Craig Bowker Jr.
A Hogwarts student killed by Delphi
Astoria Malfoy
Draco Malfoy’s wife and mother to Scorpius. During Scorpius's third year at Hogwarts, Astoria dies due to an illness.
