Terri Neilson is a member of Gateway Enterprises and designated representative of Gateway Corporation as Deputy Director, Exploration Program Section. She is described as an attractive blond woman looking sleek, confident and used to getting her way.

She started as a Prospector. The Corporation recruited her as a transport pilot between Earth and L5 Space Lab and then ferrying supplies to and from Gateway, Venus and the two Delta stations around Mercury, flying Rockwell/MBB medium range shuttles..

She serves as an official point of contact in any legal or contractual issues that may arise with the more than 300 Prospectors who came under her responsibility. 25 of them were sponsored for participation in the Orion Program. At the time the player came to Gateway, she was responsible for 90.