Board Thread:General Discussion/@comment-1031724-20161020032419/@comment-4220590-20161021121526

Myself 123 wrote: Both are Robots who can rebuilt and Eggrobo has made appearances thereafter. If we're talking specifically about the ones seen in Sonic 3 & Knuckles, yes they're probably dead. Pretty sure Mecha Sonic's post credits scene was part of the bad ending as he's next to an unclaimed Master Emerald.
 * Eggrobo and Mecha Sonic

Probably dead.
 * Great Battle Kuku 15

Probably dead. BTW when was it stated he could only be killed by "his own power?"
 * Black Doom

Probably destroyed, pretty sure it's implied the Babylon Guardian was some kind of security program.
 * Babylon Guardian

Probably dead.
 * Master Code: ABIS

Probably dead.
 * Captain Whisker

Probably dead. Head writer for the Archie Sonic comics believes that the Time Eater was the remains of Mephiles after he slipped through a crack in time. This is based on a meeting he had with members of Sonic Team where he believes it was heavily implied, so it might be true. Eitherway he's probably dead.
 * Iblis and Mephiles the Dark

Probably dead.
 * Ifrit

Probably still alive, he got turned into a card in Sonic Rivals and somehow came back, so he can probably find a way out of this situation. Maybe he finds another portal to another dimension? But that's just speculation.
 * Eggman Nega

I should hope not as it's implied he's needed to maintain an important balance in the world. When Dark Gaia first appears isn't he forming from energy? I doubt his physical form would be so vulnerable as to be completely destroyed. He's probably back in hibernation, to awaken at the proper time. Eitherway, I doubt we'll see him again. Also, what do you mean he's rapidly decaying? Doesn't look like anythings happening to him, despite bleeding heavily.
 * Dark Gaia

Already explained this. Definitely not dead. Don't know why you so desperately want him to be. Plus, Metal doesn't transform into liquid metal in Free Riders.
 * Metal Sonic

Might be dead? It's a little vague what with some members caliming they're about to die and Eggman claiming he's going to control them agian. Plus Zazz made an appearance in later Sonic games. I doubt we'll see much of them in the future.
 * Deadly Six

The reason why I say "probably" is because most of these fall victim to the "never found the body" trope, probably because it's a series aimed at children and they don't want to focus on the death of characters, even villains. I can verify that this pretty much sums it up.