When you have defeated the minibots and director D, you are transported back to Spy headquarters to receive the Medallion. You are also made the new Director.
(see related question)
Once you defeat the satellite robots, you will be back at the Headquarters and receive your Island Medallion. You are also promoted to Director of the spy agency. (see related question)
Eddie gives it to you
when you beat reality tv show and get off the helicopter the security guard gives you the medallion
when you rescue the 2cd. spy he gives it to you
When you have beaten the shark, and brought Professor Hammerhead and the boy back to the beach at Booga Bay, the Professor gives you the Island Medallion. (see related solution)
the teacher gives it to you after you get the capsule HOPE THIS HELPED :D
You return the boy to his mother and the Professor gives you the Island Medallion.
The ship you signal is the ship that gives you the island medallion.
You don't. You have to complete the rest of the island first. Look up How to Beat Spy Island on Poptropica on WikiAnswers.
Actually, the Island Medallion is mistakenly given to Ned Noodlehead. But he is too busy to be a superhero, and he will trade you the medallion for a hot dog. You can get one free from the City Park vendor. Bring it to Ned at the comics store.
You have to defeat director D and then you will magically appear in headquarters and some dude will give you the Medallion and then you get back to the blimp and do another island. easy pecey lemon squeeze.
The second rescued spy (in the electrified building on Toupee Terrace) gives you the grappling bowtie, which you use to rescue the third and final missing spy.