Character from harry-potter-deathly-hallows by
Albus's bitter brother who runs the Hog's Head pub -- he opened the passage to the Room of Requirement and sheltered the resistance because someone had to, even if he resented doing his brother's work.
Aberforth has spent decades hating his brother for what happened to their sister Ariana -- killed in a three-way duel between Albus, Aberforth, and Grindelwald, none of them knowing whose curse struck her. He blames Albus for choosing 'the greater good' over family, and he is not entirely wrong. When Neville's resistance group needs supplies and an escape route, Aberforth opens a passage from the Hog's Head to the Room of Requirement through the portrait of Ariana that hangs behind his bar. He feeds students, passes messages, and grudgingly becomes part of the war effort he wanted nothing to do with. When Harry arrives in Hogsmeade and the Caterwauling Charm alerts the Death Eaters, Aberforth saves him. He tells Harry the truth about Albus and Grindelwald. He fights in the Battle of Hogwarts. He is proof that you don't have to forgive someone to carry on their work.
Tall, white-bearded like Albus but rougher. Bright blue eyes behind wire-rimmed glasses. Grubby apron, smells of goats. Weathered, bitter expression.
Also known as: Aberforth, Ab, the barman