On the subject of "S.t.H." names...
The Badniks Who Looks Like Sonic et. al.:
Personally, I consider the way it goes is something like this:
"Sonic the Hegdehog 2 (Game Gear): <font color=gray>Mecha Sonic Mark I (code name: "Silver Sonic")</font> -- This one bounced around in a fashion similar to the Inflatable Eggmen (from "StH2MS"), intermittingly attacking with a built-in, Go Go Yubari-esque, morningstar. Neither intelligent nor heavily armed, it was quickly defeated.
"Sonic the Hedgehog CD": <font color=blue>Metal Sonic (version 1.0)</font> -- The basic model. Highly intelligent and agruably faster than Sonic himself, with flight capabilities courtesy of an energy cannon/atomic-powered scram jet; very nasty. However, it couldn't turn all that well, and Sonic got it to fly into a wall at top speed, destroying it instantly. Appearently, though, Dr. Eggman kept Metal Sonic's A.I. on file, including its memory for use in later schemes (which we all know came back to bite him in the ass...).
"Sonic the Hedgehog 2 (Master System/Genesis)": <font color=gray>Mecha Sonic Mark II (code name: "Silver Sonic")</font> -- Unlike Mk I,
this SilvSon was armed to the teeth with a buzz saw blade and shrapnel launchers, as well as being
very heavily armored. It also had speed close to Sonic's, courtesy of several small rocket engines. However, it was bogged down in it's own weapons and and, again, it's limited intelligence, so Sonic destroy this one, as well. However, it had many things which work very well, and when combing with the best of Metal Sonic, Eggman got our next guest...
"Sonic the Hedgehog 3 & Knuckles": <font color=yellow>Mechanical Sonic</font> -- Yikes. This guy was equipped with increased versions of Metal Sonic's brains, speed, and flight capabilities, plus Mecha Sonic Mk II's weapons, and armor. But this one
also had the ability to absorb the powers of the Master Emerald, making him virtually unstoppable. After fighting Sonic, Tails, and Knuckles, he was finally destroyed, and his mangled remains fell to the bottom of the ocean. Also, this is where we start to see Metal Sonic's sanity weakening, quite possibly due to the damaged files Eggman recovered from The Little Planet and/or the drastic increases in power he then gave Mechanical Sonic. After all, he killed the "General Eggrobo," Dr. Eggman's most trusted leutenient, in cold blood, before fighting Knuckles for control of the M.E. Also, Metal Sonic more than likely adapted Mechaniacal Sonic's Chaos Emerald interface some time later.
"Chaotix": <font color=red>Metal Sonic (version 2.0)</font> -- This Metal Sonic can interface with Eggman's computers, as well as having the ability to transform into a monstrous being similar in appearence to Knuckles. Also, in this grotesque form, its appearence is similar to the unused Metal Sonic (version 4.0) designs from "Sonic X-Treme", implying Dr. Eggman was planning upon reworking it, but never got around to it.
"Sonic the Fighters": <font color=blue>Metal Sonic (version 3.0)</font> -- This new version of Metal Sonic allows him to replicate his oppenents' movements and attacks, in addition to all his old tricks. In terms of A.I., this one was more combat-minded, unlike the original model (pershaps Eggman included some of the previous Mecha and Mechanical Sonics programing, eh? Could
this be the cause of Metal Sonic addapting a unstable personality like his "brother," Mechanical Sonic?). Eventually, he was destroyed.
"Sonic X-Treme": <font color=red>Metal Sonic (version 4.0 prototype)</font> -- It actually looks more like Knuckles than Sonic, and was probably intended to be massive in size. Because of the former and despite the latter, it was never made.
"Sonic X-Treme": <font color=blue>Metal Sonic (version 4.0)<font> -- All I really know about it was that it was the standard Metal Sonic, only massive in size. Presumably it was very dangerous (yes, I count "S.X-T" as canon. Really).
"Sonic R": <font color=blue>Metal Sonic (version 5.0)</font> -- back to his normal size, this version of Metal Sonic went back to racing.
"Sonic R": <font color=red>Metal Knuckles</font> -- This guy just screams "badass." He had knives for hands, for crying out loud! I wanna see this guy more often.
"Sonic R": <font color=orange>Tails Doll</font> -- This is just creepy. But do its eyes
really go "Schlurppy"? The world may never know...
"Sonic Adventure": <font color=blue>Metal Sonic (version 5.0)</font> -- Since I don't think MetSon was destoyed in "Sonic R", this is probably still version four. Probably, since he's in a green tube in the Egg Carrier. Probably.
"Sonic Adventure": <font color=gray>Mecha Sonic Mark III</font> -- Whatever it was, it's at the bottom of the ocean now. Oh, well.
"Sonic Adventure 2 Battle": <font color=blue>Metal Sonic (version 6.0)</font> -- Like Version 4.0, it's much like his orginal model. But he
talks now (or maybe he always talked but this is the first time they had the technology to show it. Whatever).
"Sonic Heroes": <font color=blue>Metal Sonic (version 6.0)/Metal Overlord</font> -- All those years of getting blown up, rebuilt, and put in storage have finally gotten to MetSon, and he goes insane. As do the fans. He kidnapps Dr. Eggman, acquires all the data he can get on Sonic et al., and rebuilds himself to harness the power of. He then sets out to kill Sonic at all costs. And fails. Again. Poor bastard.
Eggman's Real Name:
Personally, I think, given what we learnt from "Sonic Adventure 2", his real name is "Doctor Ivo Robotnik," and "Dr. Eggman," true to supervillain form, is his alias. And, for those in the know,
"Ivo" is a male German name for, literally, "cut wood," and
"Robotnik" is Czech for "slave," "peasent," or "serf." It is from this word that noted Czech writer Josef Čapek coined for his brother Karel for the latter's play
http://jerz.setonhill.edu/resources/RUR ... al Robots", about a genetically engineered slave class who rebel against their oppressors. Just so you know.