Jim Shooter was only 14 years old when he wrote and drew his first Legion of Super-Heroes story, in Adventure 346 (July 66), which introduced Ferro Lad, Karate Kid, Nemesis Kid and Princess Projectra, as well creating the Khunds, a militaristic alien race bent on conquering the Earth.
Much of this issue, the first half of a two-part story, is devoted to introducing the new characters at their Legion try-out, which is not a bad thing at all. It gives an opportunity to demonstrate their abilities and provide some background before we discover that one of them is really an agent of the Khunds.
Princess Projectra is up first, showing off her illusion-casting powers. She is royalty from the planet Orando, a magic user like Command Kid.
Nemesis Kid is Hart Druiter, who hails from Myar, the “alchemists planet,” and has taken a potion he created that gives him whatever powers he requires to defeat any individual foe he is up against.
Ferro Lad, Andrew Nolan of Earth, is a sort of an upgraded Stone Boy, as he can turn his body into iron, but loses no mobility by doing so.
Karate Kid is also from Earth, and has the curious name Val Armorr. He has mastered every form of martial arts, and while he has no super powers per se, the fact that he is able to take on Superboy and almost defeat him is impressive enough to win him membership.
Garlak, the leader of the Khunds, announces his intent to attack Earth, which is very sporting of him. Had he not alerted the Legion, his army might have succeeded. But thanks to the warning, the Legion split into teams to guard three electro-towers, which they are counting on to defeat the invasion.
Comic Boy and Phantom Girl head to Alaska with Karate Kid to defend the tower there. When it gets destroyed, Phantom Girl notes a variety of suspicious circumstances, all of which seem to indicate that Karate Kid was working to aid the Khunds.
The story concludes in the next issue,