Fearsome Four of the Dark Dueling World

Fearsome Four of the Dark Dueling World
Names
Japanese	闇デュエル界 四悪人
Rōmaji	Yami Dyueru-kai Shi Akunin
English (Asia)	Fearsome Four of the Dark Dueling World
Appearances
Anime debut	Yu-Gi-Oh! ZEXAL episode 112: "Memory Thief, Part 1"
Appears in Anime Yu-Gi-Oh! ZEXAL
Loyalty
Affiliation	Barian World
Members Kurage Kaninja Mr. Heartland Semimaru

The Fearsome Four of the Dark Dueling World are a group of Barians led by Mr. Heartland under Vector and Don Thousand in order to steal the Number cards from Yuma Tsukumo, Shark, and Kite Tenjo.

Story

The "Fearsome Four" were originally a gang of underworld Dueling criminals working under Mr. Heartland. All of them except for Mr. Heartland died tragically and were eventually reincarnated as Barians. Later on, Mr. Heartland joined them after falling through a portal and ended up in Barian Sea.

During the Yu-Gi-Oh! ZEXAL II arc, Heartland was eventually revived by Vector using the power of Don Thousand, though his form was that of a fly. Later on, Vector restored Heartland into his normal human form and summoned the other members of the Fearsome Four to accompany him in his journey to take the "Numbers" from Yuma Tsukumo, Reginald Kastle and Kite Tenjo.

Abilities

Being Barians, the Fearsome Four have superhuman abilities such as teleporting and taking into alternative forms that give them unique abilities, such as Semimaru being capable of stealing memories and Kurage capable of becoming invisible and poisoning others. They have also shown the ability to alter a Duel by using a Crest akin to that of Don Thousand's Emblem to halve the opponent's Life Points and add it to their own at the very beginning of the Duel, effectively cheating.

Fearsome Four

Each member has an alternate form based on different invertebrates.

Identity	Number	Form(s)		Current Status
		Human	Barian
Mr. Heartland	Number 1: Infection Baal Zebul			Defeated ("Numbers" "2", "3" and "4" taken from Kite Tenjo, Trey and Quattro; defeated by Yuma and Astral)
Kaninja	Number 2: Shadow Mosquito Ninja			Defeated ("Number 2" taken by Kite Tenjo)
Semimaru	Number 3: Cicada King	File:Semimaru.png	File:Semimaruform.png	Defeated ("Number 3" taken by Yuma and Trey)
Kurage	Number 4: Stealth Kragen	File:Kurage.jpg	File:Kuragetrueform.jpg	Defeated ("Number 4" taken by Quattro)

Trivia

• Kurage and Mr. Heartland are the only members whose alternate form is not an insect.
  • Although Mr. Heartland did have another form where he appeared as a fly with a very small human head.
• All members had their past lives.
• There has been a pattern of the rows each one of them would have in their respective duels:
  • Semimaru, who appeared first, took the first turn in his Duel;
  • Kurage, the second member of the group that has appeared, took the second turn in his Duel;
  • Kaninja, the third member of the group that has appeared, took the third (and last) turn in his Duel.
• They are the only Barian-related characters who do not use any form of Rank-Up