Ren is the national Vanguard champion and the leader of the team Foo Fighter.
Ren uses a Shadow Paladin Deck which is the opposite of Sendou Aichi's Royal Paladin Deck. Instead of relying on allies to gain strength like the Royal Paladins, the Shadow Paladin Deck relies on sacrificing allies to gain strength. It also seems to boost the power of the Psyqualia user.
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