After some consideration that I need to be more experimental with Four's design. I studied some of the techniques of Feng Zhu and a few more bizarre creatures to get some inspiration. I feel that creatures 7 and 13 are my strongest designs but they could definitely do with a lot of work.
I tried further to develop some more ideas but these don't feel as strong as the previous designs. 16 and 21 might be an exception though 16 veers into genericism. 19 may work as it is a bit more outlandish and less Earth-like though it is a rather drastic change from other designs, which could be good or bad.