Infidel's beginnings are not in the far future, as are Samaritan's, but in the distant past. In seeking knowledge, a youth named Kiyu left his tribe in what is now modern Kenya, only to ultimately become the slave of an alchemist. He studied and improved upon his master's work and achieved immortality by being infused with empyrean fire. Then, after his master denounced his efforts as blasphemous, he killed both his master and attacking villagers and went off to study the secrets of the universe. His researches occasionally involved human experimentation, which resulted in constant harassment by outsiders over many centuries. To symbolize his refusal to accept dogma and superstitions as law, he assumed the name "Infidel". In order to escape all distractions, he used empyrean energies to travel into the far future, where humanity was extinct. There, he built an empire dedicated to increasing his knowledge, using kidnapped slave labor from the past. However, when Samaritan changed history by rescuing "Challenger", Infidel saw his empire disappear, replaced by an unfamiliar society. Infidel was imprisoned as a madman, but he escaped to 1962, where he escalated the Cuban Missile Crisis in order to restore his timeline and rebuild his empire. Samaritan, however, survived the changed timeline and forcibly reversed it.