Klause

Klause is one of the main characters in Yu-Gi-Oh! DGU. He is an occupant of the main realm and a passionate rival of Yuoh there.

His main deck features two separate archetypes of cards, the "Economa" archetype, and the "Rare Metal" archetype.

He seems to be analogous to Seto Kaiba and Declan Akaba in many respects. His Origin Open Offeringer - Economaven is analogous to Kaiba's Chaos Emporer Dragon - Envoy of the End, and, like that card, it has a counterpart, in this case, Klause's Twilight Turn Takeoverer Economaven monster. The latter monster also seems to reference the card "Last Turn", another card of Kaiba's.