During the Gielinorian God Wars, Bree lived in the Enchanted Valley with his mate Fern, along with all other centaurs, where they lived in prosperity. At one point, however, the god of order, Saradomin, arrived to the plane to recruit the centaurs to fight for him. They joined him, with Bree and Fern becoming his generals.
Further into the wars, however, most of the centaurs had been killed in battle. Bree wanted to abandon Saradomin and return to the Enchanted Valley with the remaining centaurs, but Fern dismissed the idea and insisted on fighting for order, to which Bree complied. Soon, nearly all of the centaurs had been slaughtered, causing the race to almost go extinct. Fern asked her sister, Elora the Lifegiver, to resurrect fallen centaurs, but they were killed all over again. Eventually, Elora died of exhaustion, having never refused to fulfil any of Fern's requests. In remorse and despair, Fern removed Elora's horn from her head and used it as a wand to revive the dead centaurs, but they returned as zombies, because only the truly virtuous can use a centaur's horn.
The undead centaurs mindlessly killed their own brethren, saving Fern for last. In her remorse, she became a spiritual guardian of the horn, the Wand of Resurrection, to guard it in the Tomb of the Fallen. Bree, however, had not been slain. He had been stationed in the Temple of Lost Ancients as a bodyguard of the icyeneZilyana in the Battle for the Godsword. A powerful spell cast by Aeternam, a Guthixian mage, froze the entire dungeon beneath the temple, leaving Bree trapped in time, as one of the last centaurs alive.
^Fern, "The Death of Chivalry", RuneScape. "Saradomin came to the Enchanted Valley, and recruited the centaurs to fight for him. We were enamoured. Most of the centaurs left our home, and followed Saradomin. Bree and I were his generals. We led the centaurs into battle."
^Fern, "The Death of Chivalry", RuneScape. "The centaur herds were decimated. We should have returned to the Enchanted Valley. Bree cautioned me to abandon Saradomin's cause, before any more centaurs died in his name. I was determined to keep fighting, and because he loved me, Bree acquiesced."
^Fern, "The Death of Chivalry", RuneScape. "I brought the dead and the dying to Elora. With great sadness in her eyes, she brought them back to life. I sent my people back to the battlefield, to die again in vain."
^Fern, "The Death of Chivalry", RuneScape. "I cut the horn from my dead sister's forehead. I used it to raise my people. I was not virtuous like my sister. I did not deserve to wield that great power. The centaurs I raised were soulless undead, corrupt and wicked."
^Fern, "The Death of Chivalry", RuneScape. "The corrupted saved me for last. I died at the hands of my creations, and I welcomed death. So deep was my sorrow and regret, my immortal spirit was tethered to my sister's horn. I cannot leave this world until the Wand of Resurrection finds a worthy successor."