Krashok

The Krashoks were a species of hybrid cyborgs.

Biology
The Krashoks were mix of humanoid, cybernetics, and alien parts. However, they retained the ruffs around their necks. When a Krashok was promoted, they gained a new spare part. Those who were demoted, however, had a graft forcibly removed, leaving a scar to show their shame.

Technology
The Krashoks had an assortment of weapons scavenged or stolen from other species, including Cyber-guns and Dalek blasters.

History
The Krashoks started and prolonged various wars, acting as a third party, selling their own weapons to both sides. It was rare for them to directly go to war. They were also mostly led by two marshals, one to address each opposing side of a war.

They were revealed to be the clients of the Darksmiths in their creation of the Eternity Crystal. (TDL: The Art of War)

They planned to use the crystal to target their fallen warriors and to resurrect them, making them an invincible fighting force. (TDL: The End of Time)