This is my old model of my Xenomorph Sculpt from the movie Alien. Unfortunately, I no longer possess a rigged file; however, the model is in a T-Pose and can be rigged easily enough.
OBJ (OBJ, filesize: 70.5 MB), FBX (Autodesk FBX, filesize: 16.1 MB), MA (Autodesk Maya, filesize: 33.3 MB)