I get how on the surface Dag and Norb would seem like Icies type characters but like watching 1/2 episodes in preparation for NASB 1 made it super obvious it wouldn’t work for a multitude of reasons. Honestly duo/trio characters are very overdiscussed I feel, unless it’s for a character that probably wouldn’t be great by themselves (Plankton, Jerry in MVS, Duck Hunt, Icies, etc), duo/trio character concepts that aren’t literally Aegis style don’t really make sense to me
Yeah, this is something I've been saying forever.
The thing people tend to do is they see any duo or any team and then just automatically lump them all together in an Ice Climbers or Pokemon Trainer sort of situation without really considering if it'd make any sense or how it would work. It's not just with Dag and Norb, it's with tons of characters I see people keep cramming together.
Almost all the duo/team switching fighters we have actually make sense and are designed in a way that's faithful to those characters, who they are, their dynamics with each other, etc.
Tom and Jerry are designed around fighting each other more than they're fighting the opponent, who gets caught in the crossfire. This makes sense for Tom and Jerry as characters, who in their cartoons, cause chaos for others around them while they're fighting, and are often so wrapped up in the chase they have zero awareness of the plot happening around them. Jerry is also much smaller than Tom, allowing them to work as a compact unit when together.
Pokémon Trainer is based around the gameplay of the Pokémon games, where during battles, you can switch out Pokémon when needed or have to when they faint. This translates over to the gimmick of having three unique Pokémon to choose from. It makes sense for there to be only one of them at a time.
Pyra and Mythra's stance gameplay is based off the fact they're two personalities of the same one person who actually do switch forms when needed in-universe. It makes sense for only one to be out at a time because they literally can't physically be both out at once (at least not at a certain point in their story)
CatDog is literally joined at the hip. Their moveset takes as much advantage of this as its able. Them being one body also allows them to work as a compact single unit.
They didn't just slap all these characters together because there was more then one of them. There was actual thought put behind it.
Then you got suggestions like Daggett and Norbert, Mordecai and Rigby, the Powerpuff Girls, I've even seen people on this board complaining that Finn and Jake and Rick and Morty in MVS aren't duos. If Finn is swinging Jake shaped like a hammer around, that's not true to Finn's in-universe skills and then we miss out on the cool stuff we could do with Jake's stretchy powers. It just completely ignores that these characters are portrayed as individuals with their own lives, characterizations, styles of doing things, etc.
And that's how we get stuff like Ren and Stimpy, who have no real reason to be a duo character. Using each other as bludgeons is absolutely something they would do, but otherwise they seem to be smushed together purely because, well, there's two of them.