The 0th Biotope is a very special and hidden IGO Biotope, located in the Gourmet World. It is staffed by certain powerful people hand picked by President Ichiryuu himself.
The 0th Biotope is an "off the records" biotope of the IGO, located deep within the Gourmet World. Its Headquarters rests on top of a Cloud Tree, a tree made from a single large cloud. The main purpose of this Biotope is for its staff to find and prepare the "Gourmet God" Acacia's Full Course Menu. The Biotope also captures and studies the mysterious beast, Nitro, in order to discover what exactly they are.
Oddly enough it only has around 20 members of staff, but the people who work at this Biotope are extremely powerful individuals, handpicked by the president of the IGO himself, Ichiryuu. He did this in an effort to keep spies from entering into the ranks of the 0th Biotope.
Due to it residing in the Gourmet World, all members of its work force are powerful enough to survive in its harsh environment.
Melk the First is one of the strongest and most loyal members of the 0th Biotope. He is also credited as the greatest knife sharpener in the world, rivalled only by his daughter. His strength and skill earned him a personal invitation from Ichiryuu himself to join the 0th Biotope. He also personally crafted Ichiryuu's kitchen knife, which was also his final creation, a knife so powerful it is capable of cutting Acacia's salad dish, AIR.
|Rapp is one of the powerful members of the 0th Biotope, personally invited to join the group by the IGO president, Ichiryuu, himself. He is considered to be a very powerful Gourmet Hunter but little else is currently known about him.|
Yosaku the Saiseiya, is a long-time acquaintance and friend of the IGO president, Ichiryuu, and fellow 0th Biotope member, Ryuu, whom he invited to join the 0th Biotope. He serves as the groups Gourmet Reviver, and is currently in the process of reviving the legendary ingredient, EARTH, the dessert dish on the "Gourmet God" Acacia's Full Course Menu, by order of Ichiryuu.
Guemon, otherwise known as the "Gourmet Gang Leader", is the sole protector of the Three-Way Road, one of the three entrances into the deadly and dangerous Gourmet World. This however has had a bad side effect of ruining his memory in the process due to his isolation. In spite of this flaw, his strength and skill earned him an invitation to join the 0th Biotope.
|Ryuu is a member of the 0th Biotope, and likely one of its stronger members. He is a good friend of Yosaku, a fellow member of the group, who personally invited him to join. He was the previous boss of the Gourmet Yakuza, located in the city of Nerg, but retired from the gang to join the 0th Biotope.|
|Love is the warden of the largest prison in the Human World, Honey Prison. She uses her unique pheromones in order to keep the inmates and the beasts guarding them calm. She was also deemed strong enough by Ichiryuu to join as one of the members of the 0th Biotope.|
Malee is a strong member of the 0th Biotope. Little is known about him beyond the fact that he is considered a master in the art of Knocking, and is a highly skilled and masterful practitioner of Setai therapy.
Sakura is a powerful Gourmet Hunter, highly skilled in martial arts. He was strong enough to receive an invitation to join the 0th Biotope, an elite group of people loyal to the IGO, who are seeking Acacia's Full Course Menu.
Rala is a highly experienced Gourmet Astronomer, and is currently working with the 0th Biotope. His purpose is to research and predict when the fabled Gourmet Eclipse will occur, as it will also signal the resurgence of the legendary ingredient, GOD, the main dish on Acacia's Full Course Menu.
|Tack is a highly skilled and strong warrior from the Goro Tribe, a collection of Humans which are reminiscent of Native Americans. His strength and power is so great that he was invited to join the 0th Biotope, likely by invitation of Ichiryuu himself.|
|Malisman is a Gourmet Literary Master, skilled enough to earn her a place as both, one of the four Gourmet National Treasures, and a seat at the 0th Biotope. Given that she is a member of the 0th Biotope, she is clearly very strong despite her appearance. Her purpose in joining the group is to convey the taste of Acacia's Full Course Menu to as many people as possible through her books.|
Master Chin Chinchin, is one of the two Gourmet National Treasures currently working with the 0th Biotope, the other being the Gourmet Literary Master, Malisman. He is perhaps the most skill practitioner of Food Honour in the entire world, and is likely one of the 0th Biotopes most powerful members.
Megarodras is a largely unknown character at this point, and little is actually known about him beyond the fact that he is a very skilled assassin and that his strength and skill is great enough for him to operate in the harsh environment of the Gourmet World, given his invitation to join the 0th Biotope.
|Manan is the Gourmet Magician of the 0th Biotope, and skilled in the art of magic and illusion. He is a powerful and valuable member of the group, not just because of his strength but likely due to his magical abilities as well. He is also one of the few people in the world capable of hearing Melk the First talk without the aid of an Amplifying Stone.|
|Goblin Ramon otherwise known as the "Gourmet Mountain Bandit" is a powerful member of the 0th Biotope. Very little else is known about him and his role in the 0th Biotope, but it's safe to say that he is a powerful individual as he is able to survive in the harsh Gourmet World.|
|Kuriboh is a highly skilled pot artisan, considered by all to be the greatest in the world at the art. He is also a member of the 0th Biotope, and a very powerful member at that given his abilities and the strength of his pots. He was actually a double agent used by Ichiryuu to infiltrate the rival organization of NEO, and gather as much information as he could.|
|Atashino is a highly skilled chef and doctor, the latter earning her the title of "Gourmet Surgeon". Her strength and power is likely high, given her acceptance into the 0th Biotope, and her holding off a high capture level beast as Ichiryuu fought Midora. Her purpose in the group is to serve as the chef who will prepare Acacia's salad dish, AIR.|
|Ichiryuu was the leader of the 0th Biotope and by far its most powerful member. He was one of the three disciples and adoptive son of the Gourmet God Acacia. His greatest achievement was becoming the president of the famous IGO organization. A powerful man with virtually no equals, he sought to recreate his father's Full Course Menu, and bring about peace in the world once more. He is also the man who adopted and trained the Four Heavenly Kings, Toriko, Coco, Sunny, and Zebra. Ichiryuu died in battle against his brother Midora in the Gourmet World, while trying to stop him and his organization.|
|Kousairou, also known as the Gourmet Hermit, was a powerful and seemingly loyal member of the 0th Biotope. He was strong enough to have been invited into the group, and Ichiryuu deemed him powerful enough to send him to guard the chefs at the 50th Cooking Festival for fear of them getting attacked by the Gourmet Corps. It was later shown however that he had defected, and that Kousairou was a spy sent to infiltrate the 0th Biotope by the mysterious organization NEO.|