Arkady Research Prison is a prison located in former northeastern Russia. It is a United Species Alliance sanctioned prison designed to house non-violent prisoners who have conducted illegal scientific research.

The Alliance has turned the prisoners into working members of the United Species Alliance. Prisoners continue their research, but under Alliance surveillance. They are assigned to 'case officers' that monitor their projects. The projects that the prisoners work on are always pro-Alliance.

Mark Allen is held in Arkady for more than fifteen years, perfecting the Alphas and creating the prototypes Blackwolf and Silverwolf.

Places of Halfkinds Volume 3: Alphas
Cities/Territories: Arkady - Fan Zui Bin - Horus Backup Island - Selina - Shogun

Places: Arkady Research Prison - Kusa Eki - Lucy's Base - Van Faye Tower - Hanamura Supply Depot - Narukami Supply Depot - Shirogane Supply Depot