There are three TCs on this webpage, and there are three people who were the primary movers and shakers behind the TCs. I could press the Three symbolism further, but it'd end up with either little Piggies or Moe, Larry, and Curly.
They're Three Amigos. Three Caballeros. Three sides to the same 3-D coin. They're three cool cats, daddy-o. They're three wild and crazy guys who make Doom editing seem hipper than a swinging far out Soho nightclub lounge. So crank up the Burt Bacharach CDs, warm up your Lava Lamps, pop on your paisleys, and slide over to the computer to meet our Gang of Three. Click on a Doom 2 beastie to read about each member of the Trio!