Investigator

Investigator (調査員; chousain) is a family in the Battle Spirits trading card game.
The Investigators are present in the flavor texts of the Ultimate Battle Saga, and they are spread over all colors. They premiered in BS25, however it was not until BS29 when the majority of the Investigators were released. 
In the Ultimate Saga lore, the investigators are sent by Grandlolo to investigate upon the Reverse Continent, where Ultimates came from and was about to collide with Grandlolo. Meeting Antarc in the Reverse Continent, they eventually became the key of saving the world from crisis. Each of them got different personalities and signifying traits that are well-recognizable in the flavor texts, and in different sets from BS24 to BS30, they take turns narrating most of the flavor in a single set (not including Antarc's record). Lolo, later joined the investigators in the past, also narrated a part of the flavor texts. 
In BS46, the investigators obtained Revival versions, together with the remake of Antarc into Grandwalker. Three new "Grand-Invesitgators" are also added to the family (Ione, Shirabel and Eilmer). 
Correspondingly, in the Grand Advent era lore, the investigators are gathered once again to bridge the two continents, and helping Alex and Lolo to seek help from the Reverse Continent. Eilmer was sent by Antarc instead this time, to investigate upon the Divine World. And on his journey, he and his team met with more spirits and some of them also joined the exploration.
All Investigators have a cost of 3, and besides The Investigator Asia and The InvestigatorTrainee Lolo, all other Investigators have one cost reduction symbol of each color. Therefore, once three different colored symbols are gathered, all the following summons are "free of cost". Together with No. 21 Divergence Hill, the deck is a competent aggressive deck with a rush style, having The Investigator Euro to provide strong immunity. However, since it is also rather reliant on getting No. 21 Divergence Hill, its consistency is not as good. 
Reaching Rebirth era, however, the influx of low cost spirits/nexuses/magic with 3 cost and six reductions (one of each color), like The New World, the Magi-Deity series, God Break, has finally pushed the deck up to the meta. With also strong aggro weapons like Arche Gundam, defense options with multiple uses like The Blue World, new draw sources and core boost cards like the Revival version of Alex, the deck has dealt a significant impact to the environment. 
For the first batch of investigators (and Antarc), their names are derived from our world's region/continents:
* Asia - The Investigator Asia & The SingingInvestigator Asia
* Europe - The Investigator Euro
* Africa - The Investigator Fric
* Oceania - The Investigator Ozzania
* North America - The Investigator Nord
* South America - The Investigator Laten
* Antarctica - The UltimateQueen Antarc
==Also see:==
List of Investigators
Category:Family