Important Characters You Will Meet, Magni Bronzebeard Included

Jaina Proudmoore - Lord Admiral of Kul Tiras
Jaina was a driving force in the Battle of Dazar'alor, and now she has a new challenge: deciding if she should trust her brother, Derek Proudmoore, returned from the dead by Sylvanas Windrunner. She also formally seals the partnership between Kul Tiras and the Alliance in Patch 8.1.5, a triumphant success after she started off hated by her people in early Battle for Azeroth.

Magni Bronzebeard - The Speaker
Magni Bronzebeard is elder of the Bronzebeard brothers, former king of the dwarven kingdom of Khaz Modan, thane of Ironforge and head of the Bronzebeard clan. After being turned to diamond due to an old ritual in Ironforge and reanimated, he returns as The Speaker, the ritual attuning him to the world-soul of Azeroth. In Battle for Azeroth, he tries to heal Azeroth, but when we reunite with him in 8.1.5, we learn his efforts are unsuccessful.

Baine Bloodhoof - High Chieftain
Baine Bloodhoof, High Chieftain and Leader of the Bloodhoof Tribe, frequently clashed with Sylvanas in Battle for Azeroth. In Patch 8.1.5, he finally takes a stand and rescues Derek Proudmoore, but draws the wrath of Sylvanas.

Derek Proudmoore - Commander of the Third Fleet of Kul Tiras
Derek Proudmoore was the commander of the legendary Third Fleet of Kul Tiras. Eldest son of Daelin and Katherine Proudmoore, and oldest brother of Tandred and Jaina Proudmoore, Derek died years the events of World of Warcraft, during the Second War. Now, in Battle for Azeroth, his body was discovered by the Horde and Sylvanas has plans.