Letters

The letters are a group of supernatural people controlled by Shura.

α (alpha)
Alpha runs a Hand Control Deck, focused on controlling the opponent's moves by controlling their hand.

γ (gamma)
Gamma runs a "C" Deck, focused on completely stunning the opponent while dealing effect damage.

λ (lambda)
Lambda runs an Evil HERO Deck.

ν (nu)
Nu runs a D.D. Synchro Deck, focused on constantly swarming the field with banished monsters to Synchro Summon every turn.

π (pi)
Pi runs a Mefist Deck, focused on dealing effect damage with offensive tactics.

Σ (sigma)
Sigma runs a Necrobanish Deck, using cards like "Necroface" to quickly banish the opponent's cards and cause them to Deck Out.

τ (tau)
Tau runs a Ragnazero Deck, using cards to constantly reduce the opponent monsters' ATK to annihilate them with the effects of "Ragnazero" and "Ragnafinity".