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The Biscopea, also called the Forge of Strength, is the third of the 19 gene-seed organs implanted into a Neophyte Space Marine during the induction process to create a new Astartes. This organ enhances a Space Marine's physical combat ability and survivability to superhuman levels should he live to become a full Astartes of a Space Marine Chapter.

When implanted into the chest cavity, usually at the same time as the Ossmodula is implanted at the base of the brain, this small, spherical implant bolsters skeletomuscular development and density throughout the Space Marine's body and regulates the Ossmodula's synethetic human growth hormone secretion levels. This initiates a growth process that ultimately causes the adolescent human male implanted with the organ to reach the massive height and gain the superhuman strength and muscle density of the Astartes.

As noted above, the Biscopea is commonly implanted at the same time as the Ossmodula since it is necessary to successfully regulate the Ossmodula's hormonal secretions and it will also regulate the hormonal changes caused to the new Astartes' body by many of the other gene-seed implants.


  • Codex Adeptus Astartes - Space Marines (8th Edition), pp. 10-11
  • Codex: Black Templars (4th Edition), pg. 10
  • Codex: Space Marines (5th Edition), "The Making of a Space Marine," pg. 11
  • Index Astartes I, "Rites of Initiation - The Creation of a Space Marine" by Rick Priestley & Gav Thorpe, pg. 3
  • Warhammer 40,000: Compendium (2nd Edition), "The Origins of the Legiones Astartes" by Rick Priestley, pg. 7
  • White Dwarf 98 (UK) (1988) "Chapter Approved: The Origins of the Legiones Astartes" by Rick Priestley, pg. 13
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