The Professor was a man who lived on Gaman near the end of its history.
When James' team visited a second time, Werner sent them to talk to the Professor to get the data they needed regarding the Blended Time Paradox. The Professor cooly acquiesced and ripped a page out of one of his books, giving it to them.
The Professor was never mentioned after, so it is unknown if he participated in the assault on the nuclear power plant, or survived Gaman's destruction. It is likely, however, that he did not. (Card of Ten)