In the first short, Buzz is telling Rex, Snake, Robot, the Hockey Puck and the Aliens that it's not just the looks that make a Space Ranger, but the attitude. One of aliens does a somersault and says, "Eat laser, Zurg!" in a cool sounding voice, and Buzz looks at him, approvingly saying, "Now that's the right stuff."
Another one has Woody and Buzz going to see Rex, who has a goldfish bowl on his head for a helmet telling Woody that he's a Space Ranger. But Buzz tells him that Rex is only a "Space Cadet" because he keeps forgetting the secret handshake.
The final one has Buzz telling Rex that it takes more than a goldfish bowl to become a Space Ranger. He then sticks suction cup arrows to Rex's helmet, saying that now he's a real Space Ranger, and shakes his hand congratulating him.