Frederick Abberline is the Metropolitan Police officer who works with the Frye twins in 1868 and leads the Whitechapel murder inquiry in the Jack the Ripper expansion. In the main game he gives you Bounty Hunts, sending you after Blighter leaders to bring back alive.
In Abberline, We Presume the twins find him in a Whitechapel back alley. His offer is simple: he names gang members and they bring them in quietly. Capturing high-ranking Blighters helps his career and opens their territory to the Rooks.
Jacob accidentally kidnaps him while he is posing as Dredge, and Abberline reluctantly shares leads on the Bank of England plot. After the bank riots he asks Evie to recover stolen printing plates. Before the Buckingham Palace ball he gets the twins' weapons inside, asking Jacob for a royal guard uniform and meeting him on the palace roof.
As a young constable in 1862 he chased a case involving a stolen body and a hooded man, which led him to Ethan Frye at the opening of the underground railway. Ethan later introduced him to his apprentice Henry Green.
In 1888 Abberline is the public face of the investigation while Jacob hunts Jack in secret. When Jacob vanishes he briefs Evie, sends her to Jacob's lodgings and later to Arthur Weaversbrook. After the Owers Manor massacre and Mary Jane Kelly's murder, he struggles to stop his men arresting Evie and tells her to bring him the Ripper.
Abberline arrives at Lambeth Asylum after Evie has killed Jack and freed Jacob. She asks him to keep Jack's Assassin past, and even his death, from the public; he agrees despite his doubts and turns away the journalists outside.
Jack the Ripper
Jack the Ripper is the serial killer at the centre of the Jack the Ripper expansion, set in Whitechapel in 1888. Evie Frye returns from India to hunt him, and you also play as Jack himself in several story segments, using his fear-based kit against civilians and police.
Evie Frye
Evie Frye is the second playable Assassin in Assassin's Creed Syndicate and the planner of the Frye twins. While Jacob tears down Starrick's businesses, her memories follow the hunt for a Shroud of Eden across London and her rivalry with the Templar occultist Lucy Thorne. She is also the playable lead of the 1888 Jack the Ripper story.
Philip Twopenny
Philip Twopenny is the Governor of the Bank of England and the Templar banker known as Plutus, who has his men rob the bank's own vaults for the Order. Jacob Frye unmasks him in Sequence 6 of Assassin's Creed Syndicate, and he is the target of the memory A Bad Penny.
Arthur Weaversbrook
Arthur Weaversbrook is the Fleet Street newspaper owner whose papers made Jack the Ripper famous. In the 1888 expansion he becomes Evie's main contact for side work: the Ripper letters, the lieutenant hits and the Rooks' smuggling cargo.