Jinxo (Thomas Jordan) is a human who worked on the construction of all the Babylon stations. He took vacations during the construction of the first three stations, Babylon, Babylon 2, and Babylon 3. He decided to stay until the end of the construction of Babylon 4, only to see it "dissolve" as he departed the station. He was afraid to leave Babylon 5 because he did not want to see it succumb to the same fate as the previous 4 stations.[1]
In 2258, Aldous Gajic came to Babylon 5 searching for the holy Grail. He had spent most of his life searching all the known worlds for the Grail. He died while on the station, and upon his death Jinxo took up his quest upon Aldous' death. He left the station confident that his "curse" was over.