A four-armed, four-eyed alien humanoid with glowing teal spots stands on a desolate alien planet under a cosmic sky with distant planets.

a scientifically accurate concept of an alien humanoid species called the Yunithra (Homo yunitrenousadeptous), evolved under 8.3 G gravity on the planet Yunitre. They are a tall, four-armed, four-eyed mammalian species — humanlike but clearly distinct in proportion and structure. Their biology follows realistic anatomy and biomechanics: every bone, muscle, and joint must make sense for a being that walks upright in heavy gravity and uses all four arms naturally. Their bodies are broad and dense, built for power and endurance. Skin tones range from copper to gray-blue with subtle bioluminescent highlights. Their eyes and physiology reflect life in a Nythium-rich atmosphere — a glowing nitrogen-hydrogen-oxygen mix that gives them teal blood and faint body luminescence. The goal is plausible realism, not fantasy: a being that could believably evolve from Terran DNA under alien environmental laws, yet still read as “human-adjacent.” Art should emph See more