In Assassin's Creed Syndicate, which sibling leads the Rooks gang?

Jacob Frye leads the Rooks gang in Assassin's Creed Syndicate.

Jacob and his twin sister Evie are Assassins operating in London during the Industrial Revolution. Jacob creates the Rooks, a street gang that supports the Assassins and challenges the Blighters, the rival organization controlled by Templar forces. Gang activities help the Fryes weaken Templar influence across London's boroughs.

Jacob is generally associated with direct combat, gang recruitment, and criminal underworld missions. Evie focuses more heavily on stealth and the search for Pieces of Eden, although players can switch between both siblings during the campaign.

Henry Green is a London-based Assassin who assists them, while Crawford Starrick is the leading Templar antagonist. The question specifically concerns the gang's founder and leader, not the sibling who serves as the game's stealth-focused counterpart.