Galaxy Express 999 (銀河鉄道999（スリーナイン） Ginga Tetsudō Surī Nain?) is a manga written and drawn by Leiji Matsumoto, as well as various anime films and TV series based on it. It is set in a space-faring, high-tech future in which humans have learned how to transfer their minds (but not their emotions) into mechanical bodies, thus achieving practical immortality.
The adventures of a brave young boy who travels from planet to planet in a determined quest to avenge his mother’s death. Great Story and heart touching.