The concluding half of Jim Shooter’s 2-part Mantis Morlo story sees the Legionnaires on Daxam and Naltor, but the mediocre art prevents Adventure 363 (Dec 67) from even equalling the previous issue.
Mon-El’s team finds Daxam in ruins, its cities destroyed by chemical storms, which means the artist doesn’t have to bother drawing them. I chose the above page because it has the only Daxamite building in the issue. Morlo’s base is underwater, and the Legionnaires chase him there, but he escapes.
Meanwhile on Naltor, Morlo has poisoned the food supply, causing bad dreams on this planet of psychics, which is causing mass panic. Again, little is shown of Dream Girl’s homeworld, but at least we get some idea of how this unusual world works – or doesn’t, in this case. Ultra Boy has an impressive scene, using his penetra-vision to view the planet layer by layer until he finds Morlo’s base deep underground.
But neither Morlo is the real one, nor was he actually on Orando. They are all chemoid duplicates of himself. Chameleon Boy figures that out, as his antenna react to the Morlo he encounters on Naltor. We learn that Durlan antennae “read” any new form they encounter, and since he read Morlo twice, one must be a fake. He impersonates a chemoid in order to learn the villain’s plan – to blow up the Earth – then alters his cannon’s aim so he fires at a fake Earth built by Superboy and Mon-El.
Mantis Morlo returns in the late 70s, in a mildly better story.