Humans

In 149 After Rampage, Humanity reached a level of technology that allowed them to theoratically travel outside of their solar system. With their achievement of this feat, the Hemos decided to offer humanity a chance to be uplifted to a level of technology that equalled with the other races on a galactic scale. Humanity instead, was scared by this encounter, and shunned the Hemos. They were scared of the aliens, and prepared a weapon to scare the hemos away. The massive cannon was built over 50 earth years, and set and aimed to destroy the alien colony on mars. But, after the Hemos fleet passed humanity took this as a threat, and fired the massive weapon. This cannon shook the planet massively, creating massive tsunamis and rupturing the tectonic plates of the planet. As such, earth imploded in on itself, killing all life on the planet instantly. The Hemos watched in horror as they learned what war meant. Nowadays, there are a few humans left throughout the galaxy, doomed for extinction.