It’s been quite a long while since I’ve seen the film. So, what if the younger Tom Riddle was successful of coming back to life, wouldn’t he become a dangerous threat to the real Voldemort?
Surely he would be as selfish, evil, scheming, and ambitious. He would attempt to eliminate his frail counterpart in Goblet of Fire, a seemingly loose end.
And why didn’t the other Horcruxes have the same Tom Riddle manifestation?
Riddle did not want to “come back to life”, iirc. he just wanted to defeat Potter. plus there must be some reunification charm to unhorcrux a soul (even if that is never mentioned), so he may just want to join forces again.
i don’t understand this jump. Riddle wasn’t aware of how frail Book 4’s Voldemort was. nobody had that information until the traitor found him in Albania.
if you’re talking about how the Diary Riddle became corporeal, it’s because he fed off Ginny’s insecurities and used that to strengthen himself. he says as much to Potter in the Chamber.
the other horcruxes didn’t have a weepy Ginny to feed off; not even the seventh one.
It was. One repairs their soul by remorse.