Kobolds may not be the best deck in the game but it's still a valid deck that can pack a punch if the draws are with you. The kobolds are a unique tribe full of 0 cost creatures and a bunch of different lords that each boost all the kobolds in different ways.
You have Kobold Drill Sergeant which gives your kobolds +0/+1 and Trample(!), Kobold Overlord which gives them all First Strike and then Kobold Taskmaster which gives them +1/+0. And as the classic 0 mana kobolds all have 0 power the lords are quite important as you may understand. There is also a black and red Legendary lord by the name of Rohgahh of Kher Keep who gives your kobolds +2/+2.
One fun thing is that you actually have three different 0 mana kobolds so if you want, you can play 12 of them in a deck which with the lords make the total red kobold count 24. Then just pair this with Lightning Bolts, Chain Lightning and other burn spells for a fun aggressive deck. Maybe you also can play a couple of Blood Lusts as the Kobolds both gets First Strike and Trample from the lords?