Mystery squash

Well, I don't know what this creature is - it's the one on the left in this previous blip, approx doubled in size, but looking neither as if it's going to grow warts or go grey-green and ridged. But those are the only two kinds of seeds I could have planted (the other one in the previous blip is a known variety, but it's a neat little bush type whereas this one is a huge straggling trailer). Think it should be good to eat, whatever it is!