Jacob Frye is the playable brother who leads the Rooks gang in Assassin's Creed Syndicate.
Set in London during the Industrial Revolution, Syndicate follows twins Jacob and Evie Frye as they fight Templar influence and help organize a network of allies. Jacob is more openly confrontational and focuses on building the Rooks, a street gang that supports the Assassins in their struggle for control of London.
Evie is also a playable protagonist, but her missions generally emphasize investigation, stealth, and the search for an Isu artifact. The game allows players to switch between the twins during much of the campaign, although some missions are assigned to a particular character.
The Rooks are one of several historical and fictional groups in the story. Jacob and Evie work with Henry Green, a London Assassin, while confronting figures connected to the Templars and the city's criminal underworld. Their twin partnership distinguishes Syndicate from earlier entries centered on one primary hero.