Rogue Trooper

Rogue Trooper is a science fiction strip in the British comic 2000 AD, created by Gerry Finley-Day and Dave Gibbons. It follows the adventures of Rogue, a G.I. (or Genetic Infantryman, a genetically modified, blue-skinned, manufactured elite soldier) and his three comrades' search for the Traitor General. His comrades are in the form of biochips (onto which a G.I.'s entire personality is downloaded at the time of death for later retrieval) and are named Gunnar (mounted on Rogue's rifle), Bagman (on his backpack) and Helm (on his helmet). He is genetically engineered to be immune to almost all known toxins. He can submerge in strong acid unaffected, and is able to withstand a vacuum in his bare skin.