I've revised my Cherub OC into a proper "fursona" of sorts; not really furry, but if penguins count then I think this does too! And I've made it using a little side passion of mine, alien biochemistry, which I think reflects me well. The result is a Ran Amayou sona that I think I can really get into and be passionate about.

氨天使 [Antenshi] / Ammutto -
This alien species evolved in an ammonia-rich world, where surface pressures reach over 50 atm, and relatively high in the sky, it can get into the 30s and 40s. Evolved in the dense clouds of this alien world, these small creatures resemble pudgy humanoids with little feathered wings; their rubbery skin is a pinkish pastel orange that resembles the colors of the clouds of their homeworld, the feathers of their wings pastel blue with primary blue stems; this actually comes from the copper nitrate in their blood being incorporated into the structure of the feathers. Their blood is also a bright blue, being made of mostly ammonia and nitrate salts, especially copper nitrate. Their head has short copper-lined hairs are evolutionary leftovers from their surface-dwelling cousins. Their wings, while capable of flight in the dense atmosphere of their homeworld, is not at all suited for flight on earth.

Their ammonia-based biochemistry doesn't actually require oxygen; their blood, ammonia saturated with copper nitrates, is highly conductive, especially at the 50 atm it's pressured at, and can carry electrons readily, which are used directly in their metabolic processes; their skin and circulatory system also acts as a natural voltaic cell, and can hold a significant charge, allowing them to "hold their breath" for extended periods. Their rubber skin and feathers, while insulating, absorbs ambient electrons through induction; their wings especially, laced with copper nitrates and having a high surface area, allows for optimal electron absorption. They can reverse this process and charge their skin to release a defensive electrical shock, though doing so depletes their own charge. By nature of their highly pressured physiology, and their lack of need for oxygen, they are actually fully capable of surviving in the ocean; they'd actually be quite comfortable at depths of 3 to 5 kilometers, even being adapt at "swimming" with their wings, if they are able to find a suitable source of electrons.