He was to be Joe's never-mentioned younger brother, while Joe would have been resurrected and brainwashed into being a Galactor operative under the name of the "Space Joker". Joe would eventually be freed of his brainwashing, although the planning notes did not specify if he'd rejoin the team or act as an ally.

Joe was back on the team, with no Jack to be found. However, this "Joe" would be revealed to be an android copy, who only was under the delusion that he was the actual deceased Joe Asakura. The android would have then performed a Heroic Sacrifice at the end of the series.

Rather than there being an android Joe replacing the original, the Joe on the team would be the original, having narrowly survived his death by being modified into a cyborg. He does attempt to sacrifice himself at the end of the series, but it's averted and he continues to live.