Thanks for the comments, I'm sure you could take the K-Beast much further for those of you with greenstuff modelling skills (I literally use it to stick bits on and roughly cut excess off and hope I can find something to cover it, in this case polyfilla on the base). I was going to try and incorporate the beastmasters into it, maybe riding on top but needed those models for unit fillers.
I am working on more ideas for the 'out of the sea' part but switched to the threat from above and completed my 'counts as' dark Pegasus with a sorceress, master and master BSB.
I was originally going to make these as warhawk riders but I have a different idea for those and my attempts at placing wings on various horses just didn't quite work out. I want to add a black dragon and some harpies to complete the threat from above aspect, and the land element will be cold one knights and a hydra.