 |
 |
 |
 |
| Cathy, another cyborg, appears in
episode 13 |
Yuka is turned away by Ken in episode
15 |
Sachiko gets Jinpei to take her to
her father's space station in episode 18 |
Lisa is a former school mate of Ken
in episode 21 |
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 |
 |
 |
| So is Karl (episode 21) |
Dr. Shimamura has been Ken's teacher at school
(episode 23) |
Ulf, another cyborg made by Dr. Raphael, appears
in episode 25 |
Mako tries to kill Joe in episode 28 |
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 |
 |
| Ryu's father and brother appear in episode 30 |
Peter and his older sister help Ken in episode
31 |
Kena falls in love with Ken in episode 32 |
Kaiser and his son become friends of Joe in episode
35 |
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 |
 |
| Dr. Horin leads Ken to the underground city in
episode 36 |
Dr. Horin's son first wants to destroy the city
in episode 36 |
An unusual guest character in episode 37 :-) |
Chinita shelters Joe in episode 39 |
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| Richman appears in episode 42, but turns out
to be Gel Sadra in reality |
Sam is the grandson of Chief Anderson in episode
46 |
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