I think that Emperor Nefarious was once exactly like Dr. Nefarious, but after winning all the time and finally accomplishing his goal of dominating the galaxy, he became far more calm and composed. We do see him acting similarly to Dr Nefarious in some scenes, after all.
The writers of this game seem to have forgotten that Nefarious loves the term "Annihilate". Plus, he never does the iconic "ANNNNNIHILATE THEM!" in this game. Ever.
Dude thats not the firet game. Its a tie-in to the movie that follows similar story beats to the first game. But it's very different in both gameplay and story, the two games are not interchangeable. The first Ratchet and Clank was released on PlayStation 2 in 2002.
i'd like to offer a thought as someone who's played these games for an embarrassingly long amount of time it's extremely weird to me that they tried again to write the dimensionator as the focal point of rift apart's story when there have been two entire games detailing how it's an extremely bad idea. tools of destruction already used all of rift apart's major plot beats, of ratchet and clank scrambling to find the dimensionator before it could fall into the wrong hands, and then showing what happens when someone evil gets to use it. into the nexus was an entire game focused around how ratchet doesn't need to rediscover the lombaxes because he's already happy in his home dimension thanks to his adventures with clank and meeting talwyn. the fact rift apart is choosing to use the dimensionator plot for the third time in the series makes it seem pretty hollow the game's tone is all over the place, it wants to be quirky and reddity at one moment and then it tries to be overly sincere and expects you to take it seriously. the older games never had issues like this and i think it's because they weren't trying so hard to be such grand spectacles. everyone says that nu-R&C games are like "playable pixar movies" and in my opinion that's the problem with this franchise today. it's missing the dry, down to earth tone that the older games had. the newer games just feel so fake and forced. i'm sure i don't need to bring up the excessive gratitude and "no, thank you!"'s that every character shows to each other unfortunately i doubt we'll ever get a game like the original R&C games ever again. times change, and audience expectations are too different at this point. i doubt most people would be on board with a game that has the one of the originals. ratchet and clank as a franchise has been warped and distorted so far beyond its original scope and it's hard to imagine it returning to its roots. the series really should've just ended at crack in time.