This Bony Beetle is a lot harder than the normal one: it generates spikes whenever Mario is near him, it follows Mario and, finally, its stun period is a lot shorter than the normal one. It's been coded from scratch, is not based on the disassembly.
This sprite is mostly fine. However, aside for the cape problem I found (it behaves strangely when hit by cape while stunned or spiked, but I'd let this aside as the intended behavior), I have to reject this sprite because of its weird glitches when you hit it with a star. This image below happens when I jump on it with a star active:
This is, sadly, counted as a removal reason. Minor, but with an eventual fix, I see no reason to not see this accepted.