In a majority of comic books all of the dialogue and narration is in the comic strip itself often in the form of word bubbles. I haven’t found much variation of this style other than early Little Nemo, and Romantically Apocalyptic. Little Nemo’s narration is literally in between the lines of the panels, but this was dropped as the series evolved because it was clunky and redundant.
Romantically Apocalyptic is another story. This web comic uses a few large panels that contain small amount of word bubbles. This comic instead focuses more on the post-apocalyptic atmosphere with wide shots emphasizing the background. These shots aren’t cluttered with word bubbles and is rather eerie seeing how small the characters are compared to the wasteland playground.
So with the absence of word bubbles the creators instead write out the dialogue and extra motions underneath the panel in the form of “journals”. It is very much likes a children’s book in this sense. These journals extend how the scene behind the image plays out and shows how the characters react to their situation. The early stuff mostly follows the character Snippy’s perspective he is the main character reacting to the loneliness and absurdness of the world and characters. However it does show how the other main characters think as well, which is rather comedic because of their lunacy. Pilot always writes in letter format even though he has no one and no way to send them to because he is living in a dead world. The journals themselves are interesting in the way they are written. Whenever a main character speaks (not internal thought) they have a colored font; Snippy is blue, Zee Captain is fuchsia, and Pilot is green. I wouldn’t want this style for every comic like with Little Nemo it will be redundant at best. But it works for Romantically Apocalyptic for a few reasons. Firstly it makes sense because there isn’t a lot of characters to talk. Secondly it shows off more of the background, and thirdly it’s online so it won’t have to suffer from a size limit. It makes Romantically Apocalyptic unique.