Rafael is the strongest of Dartz's henchmen, Doma's Three Swordsmen, in Yu-Gi-Oh!. He is one of Dartz's henchmen along with Amelda and Valon. He only appeared in Season 4 and one cameo in Season 5 and therefore only appeared in the anime.
Growing up, Rafael had a perfect life with a wealthy and loving family but one day while they were on a cruise, it entered a typhoon caused by Dartz (though Rafael did not know this), and he was separated from his family, with them dying in the shipwreck (they forgot about him in the 4Kids version), and he became trapped on a deserted island. As he tried to find a city, which was merely an illusion, he was pulled underwater by Dartz, whom he joined up with. He then went to a graveyard and found the remains of his siblings there instead, confirming that his family had died in the shipwreck (found his Dark Duel Disk in the 4Kids version).
Rafael's main cards are the Guardian cards he kept with him during his time on the island. He dueled Dark Yugi and gave him the Orichalcos Card taking advantage of Yami's pride pointing out he'd 'have' to use the card to win (even though no souls were at stake due to Yami's pride he uses Rafael's card). Rafael still wins however and the Orichalcos almost took Atem's soul but got Yugi's soul instead. Atem dueled Rafael in a rematch after Rafael defeated his treacherous partner Mai and defeated him but as the Orichalcos tried to take his soul, he overcame its power. However, as the building collapsed, Rafael fell over the edge.
He survived the fall while carrying Mai Valentine's soulless body and entered Dartz's temple where his former boss revealed to him that he was the one responsible for the typhoon. Rafael attempted to use the Seal of the Orichalcos on Dartz but it backfired and took his soul instead.
He was released when Dartz and The Great Leviathan were defeated.
He made his last appearance in season 5 where he was seen searching for his family.