race features:
Ability Score Increase: Your Dexterity score increases by 2
Size: Chiroptera are about the same size as humans but are generally lighter due to their bat-like features. Your size is Medium.
Speed: Your base walking speed is 30 feet. You also have a flying speed of 30 feet.
Darkvision: Accustomed to life in the Underdark, 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 color in darkness, only shades of gray.
Echolocation: You have proficiency in the Perception skill. Additionally, you can use echolocation to navigate and perceive your surroundings. You have advantage on Wisdom (Perception) checks that rely on hearing.
Wings of the Underdark: You have bat-like wings that grant you the ability to glide. While falling, you can use your reaction to reduce any falling damage you take by 1d6 for every 10 feet fallen. Additionally, you can glide for short distances, allowing you to move horizontally up to 5 feet for every 1 foot descended.
Sonar Blast (1/Short Rest): As an action, you can emit a powerful sonar blast. Each creature within a 15-foot cone must make a Constitution saving throw (DC 8 + your Charisma modifier + your proficiency bonus) or take 2d6 thunder damage and be deafened for 1 minute. On a successful save, the creature takes half damage and isn't deafened. The deafened creature can repeat the saving throw at the end of each of its turns, ending the effect on a success.
Subraces:
Subrace: Shadow Skimmer
Ability Score Increase: Your Charisma score increases by 1.
Shadow Blend: You have advantage on Dexterity (Stealth) checks made in dim light or darkness.
Umbral Flight: When in complete darkness or dim light, your flying speed increases to 60 feet.
Subrace: Crystal Whisperer
Ability Score Increase: Your Intelligence score increases by 1.
Crystalline Resonance: You have proficiency in the Arcana skill.
Crystal Echoes: Once per long rest, you can use your action to create a burst of echoing crystals. Each creature of your choice within 10 feet of you must make a Dexterity saving throw (DC 8 + your Intelligence modifier + your proficiency bonus) or take 2d8 thunder damage and be pushed 10 feet away from you. On a successful save, the creature takes half damage and isn't pushed.
Physical Appearance:
Chiroptera have humanoid bodies with a slender and agile build. Their skin is thin and slightly translucent, often taking on a dark hue, ranging from deep purples and blues to black, mimicking the shadows of their subterranean home. Their eyes are large and expressive, with dark, reflective irises adapted to low light conditions.
One of the most prominent features of the Chiroptera is their bat-like wings, which extend from their backs. These wings are webbed and span wide, providing them with the ability to glide through the air. The wings are often adorned with intricate patterns or membrane designs unique to each individual.
Chiroptera possess elongated ears that resemble those of bats, providing them with enhanced hearing abilities. Some individuals may have facial features that echo bat-like characteristics, such as a slightly upturned nose and sharp teeth. Their fingers and toes might have small, retractable claws, useful for gripping surfaces while gliding or climbing.
Clothing and Adornments:
Chiroptera clothing is practical and designed for life in the Underdark. Dark, lightweight materials are common, often adorned with intricate patterns that mimic the natural designs found in caves. Many Chiroptera decorate their clothing and wings with crystals or luminescent fungi, adding a touch of bioluminescence to their appearance.
Cultural Traits:
Chiroptera communities in the Underdark are tight-knit, emphasizing cooperation and survival in the harsh environment. Their societies may be organized hierarchically, with communal living spaces carved into the cavern walls. Crystals and bioluminescent fungi may be used for both practical illumination and artistic expression.
Chiroptera are resourceful and adaptable, making the most of their surroundings. They are skilled navigators in the twisting tunnels of the Underdark, and their ability to glide allows them to traverse vertical spaces with ease.
Personality:
Chiroptera individuals exhibit a wide range of personalities, shaped by their experiences in the Underdark. Some may be cautious and reserved, while others embrace a more adventurous or rebellious spirit. Survival instincts are strong among Chiroptera, fostering a sense of self-preservation and resilience.
Their communal nature often encourages cooperation and a sense of shared responsibility. Despite the challenges of the Underdark, Chiroptera communities may develop bonds that run deep, creating a sense of unity among their kind.