Board Thread:Sonic News Channel/@comment-5049481-20140710123501/@comment-26459732-20150901173036

Sadly it seems that Sega got into some "legal issues" with Ken Penders for "ripping off the Dark Legion" by making the Nocturnus. Going as far as to say Shade is a rip-off of Julie-Su and that Imperator Ix is a rip-off of Dr. Finitevus. However they are not as similar as he claims, Shade has a completely different personality than that of Julie-Su and Imperator Ix has a lot of differences from Finitevus. In addition, Ken Penders technically ripped off Doctor Zachary from Sonic the Comic in some ways when making Finitevus... Yeesh I've already gone too far on this.

Technically, One could say that Chaos Gamma isn't E-102 Gamma though, they do look the same but it is stated by a few characters that Chaos Gamma might just be using some of E-102's parts. It's still a bit irksome since it makes E-102's death almost moot (It adds to his character in my opinion), but Chaos Gamma has never returned so it's not too much of a problem.