Valestein
Arcane
I have the Quake 4 Special Edition that came with that as well, although I am not sure if it got the same treatment on the PC version. Would be nice to do a coop run though. It is kind of funny that I never once thought about the differences between Quake 1 and 2 as a kid, when you play them now they are so very different.
I recently learned that Quake 2 wasn't originally even conceived as a Quake game, it was supposed to be named something else, but the names they wanted were already taken.