Which custom sheets should be taken down?

[Random Talking Bush]

These two have always kinda made me scratch my head. Remembered them while I was looking through customs today.

This one just doesn't seem all that great to me. Could just be my personal preference by suggesting it here, but.. =X
http://www.spriters-resource.com/custom_...heet/17296

And this one just kinda confuses me because it has sprite clashing, sprites from a non-sonic game, and are (apparently?) original creations and not official ones. Don't get me wrong, I love seeing crazy stuff like this sometimes, but it that kind of unofficial splicing considered acceptable for the site? A penny for your thoughts?
http://www.spriters-resource.com/custom_...heet/18198

1. Yeah, I think it's about time we gave that Stealth Sneak sheet the guillotine. It's been suggested for removal a bunch of times in the past, so... *removes*

2. What is that even doing here in the first place? First of all, it's compiling someone else's sprites (Pseudo da Hedgehog's) without permission, and they're also mechs that never appeared in a Sonic game. I'm removing that one, too. *poit*