Brutus is a Blighter thug Jacob questions in a pub during Much Ado About Drinking, part of The Last Maharaja. Cornelius Toti-Button suspects him of spilling his drink over a lost card game.
Jacob asks Brutus about the spilled drink; he denies it. It turns out a drunk Cornelius spilled it himself. As Jacob leaves with Cornelius, Brutus and some other Blighters recognise the Assassin and challenge him to a fistfight, which Jacob wins.
The questioning happens during Jacob's hazy recollection of a night drinking with Cornelius, a friend of the Royal Jeweller who knows where the Koh-i-Noor is being kept. At the Bricklayers' Arms Cornelius complains that someone spilled his beer, and Jacob goes round the pub asking questions. Brutus says he won the card game fairly and that Cornelius deserves a kick if he is still sore about it. Charles Dickens, drinking there too, calls the Blighters a shrinking gang that still terrorises this neighbourhood and wins big at cards.
The pub holds two clues: a deck of cards from a recent game, and an empty mug whose beer has been tracked across the floor. The full sync goal is to accuse the real culprit, and that is Cornelius, not Brutus. Brutus's bare-knuckle challenge comes after, and Jacob strips down to fight him and another thug by hand before walking Cornelius home.
Duleep Singh
Duleep Singh, the last Maharaja of the Sikh Empire, is Henry Green's great-uncle. He helps Evie find the Buckingham Palace plans in Family Politics, and is the central figure of The Last Maharaja missions, where the twins help him fight the British India Company.
Queen Victoria
Queen Victoria gives the Queen Victoria London Stories, in which the twins stop a new Templar faction's bombing campaign. She also hosts the Buckingham Palace ball at the end of the main story and appears in The Dreadful Crimes and The Last Maharaja.