I wanted the dinosaurs big and fat and take up as much of the tile as possible.
The third one was my favourite mix of threatening and silly.
I used a different colour palette for the baddies.
I do try and avoid doing that but I needed to contrast them to the main players plus I found this one based on colours from Jack Kirby comics and liked it.
Here's how he looks in the game. Because I wasn't using any outlines, I had to switch the one arm to point backwards which I think makes his walk look a lot sillier (in a good way).
The only thing I knew about the caveman is that I didn't want to give him one of those animal print togas that they always seem to wear. I just wanted a grumpy, hunchy over hairy dude.
I ended up having a different colour for the beard and the body to separate them better.
And that's how he looks in game.