Alien Sketch ideas

I've come up with a few ideas for some aliens for my playlist. Named them brainblast and coalossus. Each taking inspiration from a different idea i found online. Brainblast is based on brainiac 5 from the Legion of superheroes cartoon and coalossus is based on a bionicle MOC for Onoa from this YouTube video: https://youtu.be/Rpd7oo9P8kg?si=h-spRzi7Gx6bCvb3 Tell me what you all think!