Alien Vairo

History
On the planet Vairo the leader of that world personally hands out masks to his subordinates, as a pledge of loyalty they are to never remove them even onto death.

Nataru
Pending

Powers and Abilities
It should be noted all of their abilities are technologically based.
 * Masks : Their masks can produce continuous high frequency sonic waves
 * Self Vaporization : When killed their bodies disappear into purple smoke, most likely as a way to ensure their presence can be denied on other planets
 * Vadoryudo : When needed, their leader could summon the massive bio-weapon from their ship.

Trivia

 * The people of planet Vairo are appearantly very similar to humans in terms of appearance and preferred environments
 * The dialogue about ther masks implies that Vairo is ruled by a dictatorship, which is reflected in the clothing, which vaguely resembles Third Reich officers.