Diarmuid Ua Duibhne (Fate) Rule 34

Diarmuid Ua Duibhne is a Servant in the Fate franchise, summoned in the Lancer and Saber classes. He is based on the hero of the Ulster Cycle, a knight of the Fianna who bears a magical beauty mark that compels women to fall in love with him. This leads to a tragic elopement with Grainne, the betrothed of his lord Fionn mac Cumhaill, a tale often compared to Lancelot and Guinevere. In Fate/Zero, he appears as Lancer, a chivalrous and loyal warrior who values honor above all, yet is doomed by the very charm that defines him. His design features dark hair, a slim build, and a distinctive mole under his right eye. Fan artists frequently depict him in his sleek blue and silver armor or in casual and festive outfits from Fate/Grand Order. They often emphasize his tragic romantic aura, his rivalry with other knights, and his interactions with Artoria and Fionn.