These are designs for two different factions in The Calling.
The DBR-031 a or "Doberman" is a close combat drone conceived by York Industries. The Doberman was designed with the idea of urban or confined quarters combat. Instead of feet the DBR-031 had a rubberized tread system. This system allows the unit to move over most terrain at a very good speed ( about 50 mph is the units top speed). The DBR-031 can even climb stairs by locking the treads in place. The unit is equipped to operate via remote or autonomous.
The Doberman is shown armed with twin shot 12 gauge cannons. Both cannons are drum feed, each drum has a payload of 400 shells. The Doberman is also equipped with a taser package.
The DBR-031 is used by various organizations .
Children of Light soldier,aka " The Sentries" are the martial arm of the CoL ( a splinter group of the Illuminati ). The Sentries have similar training to the British SAS groups. All Sentries are training in a least 4 different fields.
The Sentry shown is armed with a 5.56mm round assault rifle with a 30mm grenade launcher underslug. They also carry a .45 caliber automatic sidearm.
The Doberman and the Sentry will appear in The Calling and a few other books coming from Bad Cog Studios and Brushfire Studios.