Darkvision. Thanks to your draconic heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern colour in darkness, only shades of gray.
Draconic Resistance. Your scales are imbued with a fragment of the Red Dragon's vitality. You have resistance to fire damage.
Gift of the Red Dragon. You can use your draconic heritage to empower your attacks. When you make an attack roll and hit, you can add 1d8 fire damage to the damage roll. You can use this feature a number of times equal to your proficiency bonus and you regain all expended uses on a long rest.
Climbing Speed. Native to volcanoes and badlands, Red Kobolds are natural climbers. You gain a climbing speed equal to your walking speed.
Sturdy Build. You have proficiency in the Athletics skill, and you count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift. Additionally, you count as one size larger when grappling or shoving foes.