Harry Deacon was an astronaut from the 21st century. He worked as an astronaut, along with Jim Lyons. When Lyons' cryo-sleep malfunctioned, Deacon thought he was lost forever.
Later, a time hole appeared in front of Deacon. When he looked through, he could see James Lyons, now going by the name Cactoid Jim, at a mayors' retreat along with A41397X442, Derp, Mitch Snow and Ray Bogle. The time hole Snow and Bogle created had also flashed back to Jim's distant past.
Deacon attempted to convince Jim to return with him to the 21st century, but Jim refused to go. He instead asked Deacon to have Todd Cooper care for his wife, Elizabeth, and son, Jimmy Junior. Deacon, though disappointed and annoyed, agreed.
- Mayors' Retreat (TAH #83)