Inarius - Father of Sanctuary
Inarius is an angel born from the Crystal Arch and served as an advisor to the Angiris Council. He grew disillusioned with the Eternal Conflict and sought to end it. He met Lilith, daughter of the Prime Evil Mephisto, and together they formed a plan to create a new world called Sanctuary where angels and demons could coexist.
They had a son named Rathma, and their union gave birth to the nephalem, a powerful race. Inarius, concerned about their power, tried to diminish it but Lilith wanted to use their power to rule over both the High Heavens and the Burning Hells.
Eventually he banished Lilith and imprisoned her in the Void. Inarius later clashed with Uldyssian, a nephalem who opposed him, and was defeated. He was taken into custody by Mephisto and tortured in Hell.
Inarius returned to Sanctuary after Malthael's actions and sought a way back to Heaven. He reestablished the Cathedral of Light and gathered followers.
Inarius was killed by Lilith when he confronted her in Hell after he murdered their son.
Imperius - Archangel of Valor
Current leader of the Council and the Heavenly Host. A mighty warrior, but also prideful and rash. Formerly close with Tyrael, but their relationship became strained after Tyrael's advocation for humanity at the end of the Sin War. Wielded Solarion, the Spear of Valor. Corresponding domain is the Halls of Valor.
Tyrael - Archangel of Justice& Wisdom
The "maverick" of the Council. Formerly an impartial dispenser of justice, his disposition changed at the end of the Sin War, which put him at odds with Imperius. Aided humanity secretly through the Horadrim, chose to become mortal when called to answer for his actions. Has since taken on the aspect of Wisdom in addition to Justice. Wields El'druin, the Sword of Justice. Corresponding domain was the Courts of Justice.
Auriel - Archangel of Hope
The voice of reason and pillar of diplomacy in the Council and its only female member. She is also closest to Itherael. Compassionate, but nonetheless willing to fight when it's necessary. Wields Al'maiesh, the Cord of Hope. Corresponding domain is the Gardens of Hope.
Itherael - Archangel of Fate
Mostly aloof, though is closest with Auriel. Reads Talus'ar, the Scroll of Fate, which allows them to see future events. Corresponding domain is the Library of Fate.
Malthael - Archangel of Death
Former leader of the council. Was once a noble being said to cherish all life. Malthael's persona darkened after the disappearance of the Worldstone. After its destruction, he abandoned the High Heavens and supposedly wandered the halls of Pandemonium, seeking answers to the unknowable mysteries of life and death. Eventually returned to Sanctuary at the head of the Reapers, having since become the Angel of Death. Once carried Chalad'ar, the Chalice of Wisdom. Corresponding domain was the Pools of Wisdom.