Bomberman is a group of six boys who do covers of Vocaloid songs. They're all Japanese, singing Japanese songs, and living in Japan. They're amateurs, not affiliated with any company and for the most part recording and audio editing on their own from their homes. Formed mid-2014, they haven't had the opportunity to do much so far, but they all have a lot of potential.
Alien has no professional affiliation with Bomberman and is just a really huge fan.