Yu-Gi-Oh Duel Links - 【Notice】 Dr. Vellian Crowler has been added to the Gate! Learn Skills such as "Middle Age Mechs," which will help you Summon Ancient Gear monsters, and "Teacherly Discipline,"
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Dr. Vellian Crowler Level 40 Gate | Wiki | Yu-Gi-Oh! Duel Links! Amino
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Vellian Crowler (manga) - Yugipedia - Yu-Gi-Oh! wiki