"Create a 3D rig of an alien with unique and futuristic characteristics. The character should have a humanoid build with distinct extraterrestrial features such as elongated limbs, large eyes, and bioluminescent skin patterns. Ensure the rig includes fully articulated limbs, a flexible spine, and detailed facial expressions that can convey a range of emotions such as curiosity, intelligence, and mystique. The alien should have a sleek and otherworldly appearance, mysterious nature.