Gather Your Allies in BG3: All Allies For The Final Fight

Arabella: Rescue her from Kargha in Act 1. Ensure the Tieflings survive the Goblin attacks. Find her parents in the House of Healing in Act 2, then find Arabella again in the Sewers in Act 3. She grants supportive spells.

Florrick: Rescue her from the burning mansion in Act 1. Rescue her again from the Wyrmgate prison in Act 3. She allows you to 'Call Forth Allies', creating Flaming Fist allies.

Halsin: Rescue him in Act 1. Ensure the Druid Grove survives. Complete his quest in Act 2. He provides +1 to all Ability scores and +2 to movement.

Isobel: Ensure she survives Act 2 by not killing her as the Durge or letting the Absolutists win at Last Light Inn. If her body goes to Moonrise Towers, she cannot be an ally. Defeat Lorroaken in Act 3. She provides a spell that heals 14-84 HP for up to six allies.

Lorroaken: Give the Nightsong to Lorroaken at the top of Sorcerer’s Sundries. If you killed the Nightsong in Act 2, tell him you killed her. If you refuse, you fight him. He summons elementals to fight for you.

Mizora: Keep Wyll in your party by not attacking the Tieflings and Druid Grove in Act 1. Continue his storyline with Mizora through Acts 2 and 3. Ensure Wyll remains in his deal with Mizora. She provides the 'Call Forth Ally' spell to damage and disintegrate enemies.

Mol: Allow the Tieflings to survive Act 1. Find Mol in the Guilhal in Act 3. She signed a deal with Raphael; you can steal her contract in the House of Hope. If you kill Raphael before speaking to her, she becomes upset. If you kill Raphael in the House of Hope and know about her contract, lie about killing Raphael. She grants Rays of Fire and reduces all fire damage by 5.

Nightsong: Free the Nightsong at the end of the Gauntlet of Shar. Defend her against Lorroaken. She summons Dame Aylin, the Paladin Nightsong, to join you in battle.

Nine-Fingers: Help The Guild get their money back by completing the Counting House quest. She summons Rogues and Rangers to aid you in battle.

Orpheus: Free Orpheus using the Orphic Hammer from the House of Hope, or by taking Raphael’s Deal. Freeing Orpheus makes the Emperor fight for the Netherbrain. He acts as an active Monk companion with strong spells like Dome of Protection that you can control.

Owlbear: Rescue the Owlbear in Act 1 (kill mother or long rest after discovering Absolutists, cub goes to Goblin Camp). Win the mini-game and let it go to your camp. Feed and heal it. Dammon can forge armor for it in Act 3, provided Dammon survives Acts 1 and 2. It summons an Owlbear in combat as an ally.

Ravenguard: Rescue Duke Ravenguard from the Iron Throne (part of the Steel Watch Foundry questline). This is part of the 'Rescue the Grand Duke' quest chain. He grants a 30 Temporary HP buff.

Rolan: Allow the Tieflings to be saved in Act 1. Rescue Rolan in Act 2 from the Shadows near the dock of Moonrise Towers. In Act 3, allow Rolan to survive and defend Nightsong. He casts a Firestorm skill.

Sarevok: As the Dark Urge, visit the Murder Tribunal and defeat Orin. In any playthrough, offer a sacrifice to the Bhaalists and become a Master Assassin of Bhaal. After defeating Orin, avoid returning to Sarevok, as he will turn against you. Avoiding him allows him to be present in the Allies scene and grants a buff: +2 to critical hit rolls, and you can cast Stunning Gaze.

Shadowheart: Allow Shadowheart to kill the Nightsong in Act 2. Visit the Shar temple in Act 3 and have Shadowheart take over, killing Viconia. She summons Shar worshipers that fight as Rogues and spear users.

Strange Ox: Smuggle the Strange Ox into the Lower City in Act 3. Grants 'Call Forth Allies'.

The Emperor: Allow the Emperor to kill Orpheus and gain him as an active companion. He becomes an active companion with all mind flayer powers unlocked to control in combat.

The Gnomes: Start with the gnome at the windmill in Act 1. Rescue Wulbren in Act 2 from Moonrise Towers prison and survive the Act during the Last Light Inn battle. In Act 3, find the gnomes as part of the Steel Watch Foundry quest. Barcus is an ally if you advocate for him as a leader. Wulbren is an ally if you side with him over the Gondians. They provide unnamed rewards.