In the first of a 3 part series of underused and underappreciated Harry Potter characters, Tim and Martin debate which was the bigger unsung hero: Regulus Black or Aberforth Dumbledore? Plus they discuss whether the Fantastic Beasts films will show who killed Ariana, discuss ways Regulus could have found out about the Horcrux, the complex relationship between the Black and Dumbledore brothers and much much more.