Debt Duel Academy
49 years of rain
Vellian Crowler – Yugipedia – Yu-Gi-Oh! wiki
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In the Japanese version, Bonaparte addresses Crowler as “interim director” to insult his feigned position. The two eventually duel to decide the fate of the Slifer Red dorm. Although Bonaparte proves to be a strong duelist, Crowler eventually wins.
Use Level 7 or higher Monster Cards 3 times in a Duel World (GX) Duel. Achieve 3 wins using only Machine-Type Monster Cards in Duel World (GX) Duels. Get 1 comeback win(s) in duels against Dr. Vellian Crowler at level 30 with Jaden Yuki.
He appears in-game after the player reaches level 6 of Duel World (GX), at which point his character unlock missions become available. Before April 17, 2018, it could only be unlocked by earning 300,000 points in the Dr. Crowler’s Tricky Trials special event.
Ancient Gear is a machine monster archetype created by Vellian Crowler in Yu-Gi-Oh! GX, Rudolph Heitmann’s Yu-Gi-Oh! 5Ds and Duel Academy student staff, such as Yuri, Dennis McField, Jean-Michel Roget, and the members of the Obelisk Force, in Yu-Gi-Oh!