The final boss of Dark Souls 3: The Ringed City is our old pal, Slave Knight Gael.
Dark Souls 3: Slave Knight Gael Boss Fight Guide
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Dark Souls 3: Slave Knight Gael Boss Fight Guide
Dark Souls 3: The Ringed City Slave Knight Gael [3rd boss] [NG++]
Dark Souls 3: Ringed City - Slave Knight Gael, Church of Filianore, and Shira, Knight of Filianore boss fights
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Dark Souls III: The Ringed City Cheats & Cheat Codes for Xbox One, PlayStation 4, and PC - Cheat Code Central