Really love the designs you've come up with so far and super excited to see where you go with this. Only problem I have is if they are a colossal being (judging by the first image you posted), I feel like their clothing (from the most recent post) isn't matching their status and power(s)? The clothing designs you've come up with in the most recent image look like they belong on a character closer to or smaller than your average human (talking about the bottom-most designs, the one in the top left of the fullbody I could see on a behemoth entity.) This is more of a personal aesthetic of mine so feel free to disregard, food for thought though I suppose? Though if the character was closer to the size of a human I feel that could potentially make them a bit more relatable to the audience.
I also wanna say I'm very curious to see how the design would look with the tentacles on the back running up the spine continue up the neck and stop at the base of the skull instead of at the shoulders.
Great stuff, can't wait to see more!