Orc

The First Orcs were brought into existence by ancient elven magics, meant to serve as war machines against the humans. Their endurance and fortitude were undeniable, but the first legion deployment turned on their elven commanders and escaped deep into the mountains. There they found a higher purpose for their thicker bones: dragon riding. The Algaian Empire very well may have conquered the world if not for the devastating dragon raids carried out by orcish riders.
Now, orcs and dragons live in shared communities throughout the material plane. Dragons offer flight, wisdom, and defense, while Orcs offer delicious cooked meals, co-pilot spell-casting, and scratches in just the right spots.
Orcs are resilient, thrill-seeking, and don't take lightly to those who would seek to centralize power.
Orc Traits
Size: Medium (about 6–7 feet tall)
Adrenaline Rush. You can take the Dash action as a Bonus Action. When you do so, you gain a number of Temporary Hit Points equal to your Proficiency Bonus.
You can use this trait a number of times equal to your Proficiency Bonus, and you regain all expended uses when you finish a Short or Long Rest.
Darkvision. You have Darkvision with a range of 120 feet.
Relentless Endurance. When you are reduced to 0 Hit Points but not killed outright, you can drop to 1 Hit Point instead. Once you use this trait, you can't do so again until you finish a Long Rest.