Fan Casting Pluto (2003)

In a world where humans and sapient robots co-exist, someone or something is targeting the seven most advanced robots, killing them off one by one. Even more disturbingly, the same killer seems to be murdering humans as well. Only a supremely powerful robot could be killing the other robots—but all robots are hardwired to be unable to kill humans, with one very important exception. German robot detective Gesicht, who is so advanced as to be nearly indistinguishable from a normal human, investigates the killings in an effort to learn the secret link between the advanced robots and humans being murdered. This is an especially urgent matter for Gesicht, since he's one of the scheduled murder victims... ║ fancast for if the Pluto anime and its dub had been made twenty years earlier. English & Japanese voice options available, professional VAs only, no celebs, and VAs have to have been active during the early 2000s. For an extra challenge if you want it, don't use the cast from the original series (if they were working at the time) or the 2003 Astro Boy anime.