These men fight at the frontline of battle,
more courageous than anyone else.
They are enthralled by the power of their Demonic Lances, causing them to set off in search of stronger foes.

Most Demonic Lancers achieve countless victories, then lose just a single battle; thus ending their lives in the Imperial Arena.
But there are the rare few that do not follow this precedent, and manage to survive for so long they end up being unable to find any more worthy opponents in the Arena.

The De Los Empire started calling these men their "dogs" while exploiting them in extreme conditions by promising them their freedom at the end of rigorous missions.