Herk, known as Tio (ティオ) in the Japanese version, is a character in the Yu-Gi-Oh! ARC-V anime. He is an elite Duelist and employee of the Leo Corporation, and in charge of investigating Marco's disappearance.



Tio (spelled as "tío") means "uncle" in Spanish, but also means "dude" or "guy" in some contexts. Herk's French name, Herc, may be short for Hercules, a possible reference to Herk's somewhat muscular body.


Pre-Arc League Championship

Herk met with Declan and Henrietta Akaba regarding the disappearance of Marco, and presented to them Marco's Duel Disk and cards that his team found at the site of the incident.[1] Later on, he met Julia, Dipper, and Kit at the site of Marco's disappearance where they were searching for clues regarding his attack. He was evasive but polite to the students, telling them that evidence was still being gathered and that they should continue their studies.[2]

Sometime later, Yuto witnessed Herk Dueling against Shay, who defeated him and sealed him into a card. Shay mailed it along with Marco's card to Declan.[3]

Duel Academy

After Zarc's defeat and the Standard Dimension being reborn into the "Pendulum Dimension", Herk was freed from his card.[4]


Opponent(s) Episode(s) Outcome
Shay Obsidian 18 Lose


  1. 1.0 1.1 Yu-Gi-Oh! ARC-V episode 14: "The Show Must Go On"
  2. Yu-Gi-Oh! ARC-V episode 15: "In it to Win it"
  3. Yu-Gi-Oh! ARC-V episode 18: "Trapped in a Card"
  4. Yu-Gi-Oh! ARC-V episode 141: "Junior Youth Championship"