An alternate future in the "Voyager" series finale "Endgame" shows an older Barclay teaching at Starfleet Academy, with the rank of Commander. By this point, Barclay has long since conquered his negative personal habits and is much more confident and secure with himself. The proper timeline's version of him is present when a transwarp aperture opens near Earth. Correctly deducing that it has been opened by "Voyager", he witnesses the battle that follows with the Borg sphere and "Voyager"'s return to the Alpha Quadrant.