Um, no its not. Gauron is the only other Klingon that has some sort of real-recurring role on ds9. And maybe the dah-har master guy, but even he's a two-three episoder guy. While Martok and Worf have 20+ episodes under their belt.That is, in fact, wrong. I can think of at least two other Klingon characters appearing in more than one episode (and several Klingons appearing in only one episode).
Yes, but why would you want to claim them? That makes no sense. Also, those characters are extremly minor at best.No. CallMeLiam is claiming that a Klingon might not be town-aligned. And yes, there are Klingons on the show that would fit there perfectly.
That dominion cowards bit is hardly an indicator of shapeshifters. The dominion is known for trickery and deception sure, but I think you're reading into deli's post a bit much there. Klingons call all their enemies cowards. I've seen Paradise lost and I think you're missing the point of the episode. Sisco accused his own father of being a shapeshifter, crossing the line. Same goes for this setup. If we start accusing everyone of being a shapeshifter all the time, all reason just goes out the window.