Spriggans

Spriggans, or Strikers from the English translation, are secret agents recruited by the ARCAM Corporation in order to do covert work in hostile areas without compromising the company since they don't carry any identification that would give away any links to ARCAM, even though its enemies know that they would deploy them in action. Some agents would be recruited from ARCAM funded or assisted establishments. Yu Ominae, for one, was recruited by ARCAM when he entered high school in Japan, which happened to be funded by the ARCAM Corporation.

Most Spriggan agents are issued with a device called the Armored Muscle (AM) Suit, a jumpsuit made from Omihalcon. When activated, it would use artificial muscles to help them carry heavy items and weapons with their hands 30 times its normal weight while making them impervious to bullets and melee weapons.

However, there has been some exceptions when the Armored Muscle Suit was proven to be vulnerable:

- In Japan, Yu Ominae's AM Suit was slashed by Koichi Moroha's Hihiirokane sword.

- In Mexico, Yu was nearly killed by a giant Jaguar beast spirit when it drove one of its claws into his chest.

- In Egypt, Yu's AM Suit was penetrated from the interior when ARCAM undercover agent Oboro, using the codename Mirage, used Chi powers to attack him.

Trident Corporation, a rival of ARCAM's in searching for "advanced" aritifacts, copied the Armored Muscle Suit and made their own version known as the Armored Machine Suit, which is the same except that it makes the user fast and agile.