You are an advanced race of insect that was bred to do battle with anything and everything that stands in its way.
Normally, Rhinocereetles are quite large and bulky, and you live up to that. Your bulk is mostly from your thick and dense natural armor covering all of your body. This armor is able to withstand most damage and makes you a walking tank. The armor comes in a variety of colors, from deep black, dark blue, or dark purple. You also have a large horn atop the tip of your skull. Within Rhinocereetle communities there are contests on who's horn are stronger and larger.
Rhinocereetles were once small beetles that crawled around in the abyss and underground all across the world. Then the creatures, who lived in these places, needed a source of entertainment as life there is without joy. They began to set up small battles of these beetles to see which beetle was stronger. It began with putting them on platforms to see which can push the others off. Then the beetles began to grow at immense rates, growing in strength and in size. Finally they decided to let their local wizard make them as large as orcs and as strong as giants. They create arenas to allow these creatures to battle to the death. This grew out of hand and the Rhinocereetles broke free and now live in burrows near forests and hills.
Ability Score Increase. Your Constitution score increases by 2
Age. Rhinocereetles mature at age 10 and live to be about 50 years old
Alignment. Rhinocereetles tend to be good or neutral and lean towards the chaotic side, preferring to do whatever it takes to win.
Size. Rhinocereetles range from 6-7 feet and weigh between 300 and 400 pounds. Your size is medium.
Speed. Your base walking speed is 25 feet.
Multiple Arms: You have 4 arms. Two normal arms and two smaller arms. Your smaller arms are more vestigial and are not able to make attacks or ability checks.
Natural Weapon: Rhinocereetles have large horns on top of their heads. You are proficient with your horn, which acts as a melee weapon that deals 1d4 piercing damage.
Languages. You can speak, read, and write Common and Undercommon
Ability Score Increase. Your Dexterity score increases by 1
Flight: You have a fly speed of 25 ft. You can fold open your exoskeleton on your back and let your wings out. You wingspan is twice your height and you can not fly in an area that does not accommodate your wings. When you take damage while flying, make a Constitution save with a DC equal to 10 or half the damage taken, whichever is higher. If you fail the saving throw, you fall to the ground. You may not fly in normal backpacks or armor. The cost to alter your gear to be suitable for flight is equal to half the cost of the gear. You can hover.
Ability Score Increase. Your Strength score increases by 1
Resilience: You can focus yourself to occasionally shrug off injury. When you take damage, you can use your reaction to roll a d12. Add your Constitution modifier to the number rolled, and reduce the damage by that total. After you use this trait, you can’t use it again until you finish a short or long rest.