Discussion: Ultimate has new Paultena's Guidances, but no new Codecs

[CuriousUserX90]

Well, obviously Professor Oak and Dr. Eggman are much more important characters to the series. Being a series staple and the main nemesis respectively. Campbell, while important to the series, isn’t as vital to the series as the former 2. And since it is a fighting game and not the main series, I believe it may be more apt.
I’m open to the fact that their might be an alternative and simpler answer.

Whatever the real reason behind it is, someone might post about it to VGFacts in the future. Even if games weren't going to feature Roy Campbell after his Japanese Voice Actor's death, it's still a mystery as to why the Development Team decided to still leave in all the Codecs from Brawl unchanged as if it still were Brawl when clearly lots has changed about particular fighters in the Smash Bros. series since then, such as with stating "Here in Brawl", referring to the Female Pokemon Trainer as a Male, referring to Alph as Olimar, and Link (now using Remote Bombs instead of Regular Bombs and losing his Clawshot) and Pit (now having changed a lot for being more the Kid Icarus Uprising version then the NES Era version) still sounding like it's the same respective versions of those characters since Brawl.