Professor Frank

Professor Frank, whose surname is ommited in the English version, is known as the "Dueling Counselor" and is a competitor in the Fortune Cup. He duels Luna in a consolation game. He is the Yliaster member that Goodwin inserted into the tournament although Professor Frank also had another goal in his mind.

In the Japanese version, Professor Frank has a catchphrase "sa", which he says 3 times. "Sa" is a Japanese word to request somebody. In the English version, this is replaced by a constant usage of analogy and simile, both regular and homeric.

His first match is unseen, but it is mentioned that he lost to Commander Koda on purpose, specifically so he could be in the consolation game. In the Duel, he hypnotizes Luna, then enters a trance that allows him access to the Duel Spirit dimension (specifically, the "Ancient Forest").

His mere presence appears to be able to destroy the forest. As such, the forest's guardian, Ancient Fairy Dragon, attempts to kill him to save its home; Luna ends the duel in a draw to save him.

It was shown that he intended to be the ruler of the Spirit World by defeating Luna. He is also a bit self-centered, shown that he decided to keep the Spirit World to himself and will not share it with Goodwin and the other Yliaster members. It was also said by the professor himself that he has been spending his whole entire life looking for the Spirit World.

Following the Duel, Professor Frank succeeds in his mission, but it is unknown as to the state of his mind.

Deck
The Professor plays a Psychoanalysis Deck whose cards are based off various aspects of the Eponymous School of Thought as seen with the cornerstone card, "Ido the Supreme Magical Force".