Bloodshot

Bloodshot is a superhero created in 1992 by Kevin VanHook, Don Perlin, and Bob Layton, appearing in comic books published by the American publisher Valiant Comics. The Bloodshot character has had different origins and incarnations, but he is consistently a character empowered by experimental nanites (microscopic machines) injected into his bloodstream, a procedure that leaves a red circular scar on his chest, hence the name. This gives Bloodshot enhanced physical traits, the ability to repair damage to his body, an internal database of weapons and hand-to-hand combat training, and a mental connection to computers (technopathy)…Wikipedia