Here is Marie Lux, an infamous troll on Star Trek Online. Often, they will join groups with the sole purpose of doing all they can to make them fail. They will purposely do things wrong and pull a massive amount of enemies to try and make the group wipe or fail optional objectives. Why Cryptic / PWE hasn’t done anything to address this sort of trolling after countless complains is beyond me. Personally, I think it’s all about money.
Notice they are constantly calling me and my group names as they run off, not helping at all. In case you can’t see their name, it’s Marie Lux@649. I can’t call them out on the Star Trek Online forums because it’s against their rules, but I can call them out here. If possible, just stick them on ignore to avoid their trolling ways.