With a single swing of his hammer, that guy made all the dust disappear from the area, and he only found Luke a few dozen meters away, unfazed by that. It seems that he did something, but no one could tell what it was. His fists weren't emitting any energy, nor were they trembling due to the high concentration of energy… Thanks to that, the overlords raised their guards. It could be a mind game, but in the end, it was better to be safe than sorry…
The giant guy and the hammer guy were too angry to calm down and think clearly, probably because Luke killed their girlfriends or wives. So, they stayed in the front while the dwarf took a few steps back to react in case something weird happened, something that Luke might have planned beforehand when he used the dust curtain to disappear for a few moments.
