Complex sentence: Later, he was approached by a fellow Brachen demon, Lucas, who told Doyle that the Scourge, a militant group of pureblood demons, was after all half-breeds and begged for Doyle's help.
Split into simpler sentences: Later, he was approached by a fellow Brachen demon, Lucas. Lucas told Doyle that the Scourge, a militant group of pureblood demons, was after all half-breeds and begged for Doyle's help.