I believe I just encountered this. I just finished Frontlines in DF and I'm very sure the entire team was made up of bots. The first warning sign was how everyone else was a dps and there was one tank (I was a WHM). I asked for a co-healer, so the team has a better chance at surviving and no one answered. While the match proceeded, no one got to any crystals and they just stood in one place. Members of the other teams took over our tomelith and I had to defend it, since no one on my team bothered. So I died and asked if there was someone who wasn't a bot. I got no response, not that I was expecting one. We get 3rd place and then we have people saying gg.

Clearly, those were bots, yet the gear, weapons, and mounts they used seemed like they were going through actual combat. My question is, were those characters used by actual players, but were changed to bots for pvp?