Character/Creature Concepts - Sci-Fi

Hello everyone,
I hope this finds you well and safe.
It has been a while I have not done any character designs since I was mainly working on environments and architecture.
I decided to start the new year 2021 with new concepts. As you can see, I have been quite busy the past few weeks. I did some fantasy character designs that you can see in this link:
https://www.artstation.com/artwork/q9dn2D
The concepts here are the sci-fi ones.
Please let me know which ones you like. I will refine and do the color concepts whenever I have time.
Thank you for viewing and have a terrific week!
_Ken