I just recently found somebody was putting up all the Jetter Mars episodes (albeit in Greek), so I went ahead and checked them out. You'd be surprised how many of Tez's characters were there with only a few alterations, instead of being fully-redesigned and renamed like with Jetter and Miritan. Nearly ALL the classic Astro Boy characters are here, but with a few changes! It's like Robotboy, except Tezuka allowed it!
So...

In #1, Tick & Tuck briefly appear as Yamanoue's lab assistants (Yamanoue is the Tenma redesign), despite not saying a word the whole time. They two reappeared in #4...

...Uncharacteristically evil. Tick was the leader of a group of thieves and was trying to get a robot dog that had a diamond or something in it. He even tried to blow up Jetter.


ALSO in #1, Tezuka himself appears during a little slideshow that shows technology through the years, involving a crowd packing onto a bus. During the same slideshow, a train goes by packed with characters such as Hamegg, Sapphire, Kimba and Black Jack, but I can't seem to get a picture.

Hamegg showed up in #5 as a fake talent director who picked up Jetter to have him fight a bigger robot for paying people to watch.
That woman next to him is his scamming partner and wife. I'm not kidding.
The guy is still uploading episodes, so I'll post any new cameos when I see them. I checked a Japanese site and apparently Skunk shows up in #7 and Lamp in #12, so I'll see those when they come out.
