Aporia

Aporia is an entity created from a fusion of the Three Emperors of Yliaster.

Deck
Aporia uses Jacob's deck as he continues the duel on with Yusei Fudo.

Trivia
Aporia's name could stem from either of two Greek words, "απορία", which means question, wonder, or "απόρροια", which means result. His Duel Runner appears to resemble Cerberus, the three headed dog which guards the underworld according to Greek mythology.