Nicknames were an inevitable part of military life. The short guy was almost always "Shorty" (or "Stubby"), the tall, thin guy was "Slim", the heavy guy was "Chubby" (or "Tubby"), Smith - more often than not - was "Smitty", Sullivan was "Sully", Murphy was "Murph", Thompson was "Tom" (or "Tommy") and so forth. The guy with an affinity for a certain food might be "Beans" or "Spud". One drawback is that nicknames almost never made it into official records.
I've got about fifteen pages of squadron and group history, command & staff, aircraft, assignments, stations, armament, honors, etc., but you no doubt have all you need along that line. You've also apparently accessed all records relative to their disappearances, location and recovery of remains, etc.
If you haven't already done so, contact the Thirteenth Air Force Veterans Association through their website at < http://13afvets.org/index.htmlhttp://13afvets.org/index.html > (click on the address to go there). The membership roster lists fourteen who are apparently former members of 100th BS(M); any one or all can lead you to that many others.
A separate address that doesn't seem to appear at the 'site (remember, a lot of these ol' fudds aren't online, they can't hear the phone and it's usually best to write anyway):
Thirteenth Air Force Association 7049 West Illinois Road Ludington, Michigan 49431-9503 (616)843-9597
Let me know how things go. If you can come up with a last name and/or hometown I'll locate the family for you.