[quote=@Ulstermann]
I was thinking of only using it as a starting point-the character would be shipwrecked on the little island you showed on the map and originally sent by one of the Enclave's departments, the External Security Bureau, to gather intel. Once he was shipwrecked he would have no backup, no contact, and would have no reason to advertise his allegiance. 

Once you chose to bring the full Enclave into play, he would obey your orders.

Would that be okay? 
[/quote]

Hmm.. if your Enclave is the Enclave I'm thinking of, they probably won't like the kind of one I plan to bring in later, so no need to follow orders. Your character should be good.

Also, I don't recommend ship wrecking on that particular island off the coast. Maybe somewhere on the coast of the main body of land, because that island doesn't have a good reputation of returning people who've crashed there.