Hello.
Each model is made on an Epic skeleton.
Alien , Alien 2, Alien 4, Alien 5, Alien 2 Remake also have animation sets.
ONLY DEFAULT UNITY SHADER + In the model Alien 3 it is desirable to use a shader with a two-sided display of polygons.
NO HDRP/URP
Before buying, read the technical details and watch the pages and videos for full information.
Alien 1
https://assetstore.unity.com/packages/3d/characters/creatures/alien-1-249728
Alien 2
https://assetstore.unity.com/packages/3d/characters/creatures/alien2-249732
Alien 3
https://assetstore.unity.com/packages/3d/characters/humanoids/sci-fi/alien-3-259621
Alien 4
https://assetstore.unity.com/packages/3d/characters/creatures/alien-4-261255
Alien 5
https://assetstore.unity.com/packages/3d/characters/alien-5-266884
Alien 2 Remake
https://assetstore.unity.com/packages/3d/characters/creatures/alien-2-remake-272348