Indecisive

"What could you offer us?" said Vandor

After that, none of the leaders dares to scheme against the elf leader again. At first, some of the leaders thought that they could push the elf race to handle the monster overlord alone by using the investigation team situation.

Some of the greedy ones even want to take advantage of the elf race. However, they truly didn't understand the nature of this long-lived race. 

The elf race may seem uninterested in worldly stuff and peace-loving. But, their true nature is like a sleeping dragon. The moment someone touches their reversed scale, they will only create destruction towards the surrounding.

Moreover, their long lifespan made them wisest among the others. In front of them, all the plot and scheme is like child's play. That's why the elf race is never afraid of the other race.