Matty_kool wrote:What I mean is that it has got some of the same characters as in astroboy with different personalities. (2001 film)
Those 'characters' as you call them, are Tezuka's regular actors whom he employed in many stories both manga & anime, in various roles. There is a "Characters' World" section on the Tezuka Osamu World website, & there are 50 actors who have their own pages (51, if you consider that Tick & Tock share a page).
As an example,


Ham Egg (Caccitore), played both the evil ringmaster in Astroboy, as well as other roles, such as a movie director in
189 Confusion at the shooting studio (thread on this forum) 