Charles Allen Jr., a 22-year-old senior at the University of Massachusetts Dartmouth who had legally changed his name to Neo Babson Maximus, disappeared on October 12, 2007, under troubling circumstances. He was known to have bipolar disorder and had recently stopped taking his medication; in the days before he vanished he showed increasingly paranoid behavior and told his sister people were after him after she asked about his deleted Facebook account.

In the early hours of October 13, he attempted to force entry at a house near the UMass Dartmouth campus, saying he was looking for a friend; when the homeowner confronted him he apologized and ran into nearby woods. Personal items were later found scattered in the area: his backpack near campus and his sneakers in the woods, while his phone, keys, and wallet were never recovered. Searches and inquiries at shelters and hospitals produced no confirmed leads, and there has been no activity on his bank accounts, credit cards, or cell phone. Investigators do not suspect foul play and believe his mental health likely contributed to the disappearance, though scattered unconfirmed sightings were reported.