While out and about yesterday I popped in to the Dollarama on Taylor. I was able to pick up two more Tron figures - a Clu and a Black Guard.
With the two Clu Sentries I had found earlier, as well as the other figures I had snapped up when they first hit Dollarama, I should be okay for the Tron - Grid Games - Disc Battle. I will need to repaint the energy lines on these so that it is more clear that they are different than the regular Clu and Guard.
If I could get a few more Kevins, Sentries, or Clus I would be a in better place.