Some of the shinigami aren't bony, there's one that looks like a fat giant slug who enjoys eating bananas. :XD I can't remember where I read that but it was drawn by the mangaka as a short series I think.

I'd ignore the L-like person and continue. I wouldn't be worried about being caught since all the cause of deaths I'll be writing into the Death Note would be accidents or natural deaths like from disease. They'll be hard-pressed to find anything unnatural about it aside from how the rate of criminals dying have increased.