He does little except voice his concerns over Fargo using his massive cannon to fire the player, rather than a giant cannonball, at the circling Horde zeppelin.
"Doc" Schweitzer apparently disappears after Highbank is phased in, and does not appear to surface in any other part of the world.
Schweitzer is a reference to the character in Flintlocke's Guide to Azeroth, who has been noted to bear a striking resemblance to the Emergency Medical Hologram on the television show Star Trek: Voyager.
The EMH chooses "Schweitzer" as a name for himself at one point, after Albert Schweitzer, after whom "Doc" Schweitzer is also likely named.
- Patch 4.0.3a (2010-11-23): Added