Spriggan

Spriggan (スプリガン Supurigan) is a manga series written by Hiroshi Takashige and illustrated by Ryōji Minagawa during the early 1990s. It was initially released as Striker in the North American English translation, as it is the English translation of the word Spriggan from Celtic.

Spriggan was serialized in Shogakukan's manga magazines Weekly Shōnen Sunday and Shōnen Sunday Super. The manga was adapted into an anime film by Studio 4°C in 1998. A PlayStation game called Spriggan: Lunar Verse was also based on the manga with some material created for the game.

Plot
Spriggan takes places in the last years of the Cold War where mysterious and unknown artifacts called out-of-place artifacts (OOPArt) are discovered in various parts of the world, leading to a secret war between various forces against the ARCAM Corporation, an organization that placed itself the guardians of the OOPArts in order to prevent them from being used as weapons.