Adventure 360 (Sept 67) cuts between the Legionnaires imprisoned on Takron-Galtos, those running a resistance movement on Earth, and a mysterious villain whose identity is subtly hinted at, but not revealed until the conclusion of Jim Shooter and Curt Swan’s tale.
After checking to see that Superboy, Mon-El and Ultra Boy are still safely imprisoned, Kandro Boltax goes to check on his very immobile and unemotional son. Really perceptive readers might be able to identify this lad, but this scene is about as close as the story gets to giving away the identity of the mastermind of the plot.
Invisible Kid leads a breakout of the Legionnaires imprisoned on Earth, bringing them to an underground lair of Lex Luthor’s. Though some of the team want to lead a breakout of those on Takron-Galtos, Invisible Kid insists they solve the situation on Earth first.
Duo Damsel gets to put her powers to use, infiltrating Kandro Boltax’s office and discovering secret info on the water purification plant (remember that?), which has been used to chemically control the minds of people on Earth.
Brainiac 5 devises an antidote, and Invisible Kid’s team leads an assault on the water plant, while the imprisoned Legionnaires manage to break out on their own.
Everyone comes together as Boltax is revealed to be Universo in disguise, and the son, who managed to get the cure into the water, is, of course Rond Vidar, who is granted honourary membership at the end of the story.
Despite Universo not appearing, except in disguise, for the bulk of this 2-parter it works very well. The story would heavily influence an 80s Legion tale, The Universo Project – in fact it would be the very similarities that would alert the Legion members to Universo’s actions in that tale.