Tales of the Valiant Players Guide (pg. 108)
Kobolds are a cunning people with draconic features. Kobolds display an inborn mechanical aptitude which often manifests as trap-making and tinkering. The crafting of traps became such a monumental part of kobold civilization that those rare kobolds born away from their own people still gravitate toward occupations and hobbies that allow them to craft small, potentially dastardly, creations. Though they can live for decades, a penchant for curiosity claims as many kobold lives as time does.
Darkvision
You have darkvision to a range of 60 feet.
Tinker’s Fascination
Your innate fascination with how things work allows you to use tools with ease. When you make an ability check with a tool, you can roll a d8 and add the result to the check.
Natural Adaptation
You inherited one of the following unique traits, determined by your size.
• Fierce (Small). When a Large or larger creature you can see within 5 feet of you attacks you, you can use your reaction to attack that creature immediately after its attack.
• Truescale (Medium). Your naturally thick scales provide significant protection. You have a natural AC of 13 + your DEX modifier. In addition, you have resistance to one of following types of damage: acid, cold, fire, lightning, or poison (choose during character creation).
Kobolds are rarely more than 3 feet tall, and tend toward extremes of body weight. However, you can choose to play a rare oversized type of kobold known as a truescale. Truescales stand around 5 feet tall and are Medium size. Your size determines which trait you have access to via the Natural Adaptation feature.