An Enchanter in their room.
Trading with a kobold after right-clicking them with an emerald.
Some Zombold Variations.
Skevin!
Look, I'm an engineer... That means I solve problems.
The Burial side room of a kobold den where the den is buried within a pile of gravel.
Another Kobold Den center.
The side room which has a kobold-made mineshaft.
Armor Trim, Banner, & Tool Set.
Argh!
A side room to the main den where kobolds farm their favorite food & water.
One of many possible Kobold Den Centers.