Miller has a good knowledge of manga world, and his interpretation of Lone Wolf and Cub, visible on the covers of some western editions is just as good as Goseki Kojima's art.
Now that I think of it, I've red or seen Gigantor/Tetsujin 28. As a fan of mechas, I'm ashamed to myself.
And now, for something completely different. Another cameo:
Midnight: Act 8.
On one of his vigilante missions, Midnight goes after some thugs who have stolen a whole rocket battery which was being carried on a truck. Midnight shoots all of them on an empty space in order to destroy all of them without hurting anybody. But we can see that between the rockets there's something weird at the very least:
