Then, when Weiss "entered" the Network(to find a cure to the virus that Restrictor infected him with), Hojo possesed his mind and body.
Hmm? Where'd that info come from? I'm not doubting it, I'd just like to know where it came from.
2. i've not collected all the G-files but i'd like to know, what relevance does he have to the story?
'G' is the man behind Deepground. (SPOILER)He's mentioned a few times, either directly or in passing, but his existence makes quite a bit of sense and explains a few things. He was the one who turned Deepground from a SOLDIER infirmary into a perverted experimental ground. It seems he was from an early Shinra experiment, one pre-dating Sephiroth's creation. Sephiroth and G are almost equal in power, but different in the kind of power they have. Sephiroth represented overt destruction and skill on the battlefield, whereas G pulled the strings from behind the scenes, a master manipulator who weilded enormous power by controlling events without being seen. Both Sephiroth and G had their identities and details suppressed by Shinra, undoubtedly to conceal the secrets behind their existence; but it's clear that G went renegade some time before Sephiroth did.
G's also the 'father' of the Tsviets; not their biological father, not in Shelke's case anyway since she was taken to Deepground as a child, but he's still the one respsonsible for the existence and the powers of the Tsviets.
also. the whole thing about hojo surviving in cyberspace and being effectively reborn inside weiss.
They could simply have had Hojo preserve his spirit inside some contraption, but they couldn't do that because his death - and his return to the planet - is confirmed in the novella "The Maiden Who Travels The Planet" (or something like that), when Aerith encounters his spirit in the Lifestream. So, for Dirge of Cerberus, they had Hojo basically download his mind into the internet and preserve it that way. The collapse of Shinra, Inc left things in a bad way, but when the network was brought up-and-running again, the data duplicate of Hojo's mind was brought back along with it.
then again i have noticed that in the starting flashback hojos lieing there dead and then suddenly he's gone.
He doesn't 'disappear' until the platform gets struck by lightning and starts to collapse, so his body simply fell off the Sister Ray and plummeted to the ground. He wasn't quite dead then; Yuffie's 'tricorder' detected a lifesign on the cannon, and Vincent rushed up to finish the job; Hojo must've finally died after the lightning strike.
right? it seemed a bit dodgy and "quick! we need to think of a way to bring hojo back!" seems as how its not mentioned at all in FF7
I agree, it was a bit of a dodgy contrivance and it could've been handled better... but that scene's not in FFVII for another good reason: while Yuffie and Vincent were helping the evacuation of Midgar, Cloud and Tifa were back alone at the Highwind having a long angsty discussion about their feelings. We just didn't get to see what the other characters were up to at that time...