Thanks for taking interest in the character, Keybounce. I appreciate the thought.
Sadly, as I've stated before Max is pretty much done and there's no reason to continue it, even after three years. There was eight pages being written and drawn for him, but at the time the artist who picked up the comic, loving the character, withdrew from drawing it after three pages (of which I don't have access to at the moment. Maybe in a few weeks I can see if I still have it around). I didn't personally want to touch it since the comic moved on anyway. Either way, if was never retro-shoved in since it was never finished.
This is my take on what happened: His disappearance leaves an open question only to ask what became of him. If you wanted to figure what happened, you'll have to understand his fatal flaw that Catnap has. His ability to null the effects of other people's powers may make him OP in some light but at the same time that is his Achilles's heel. He can't have things happen to him that would change his outward appearance without nullifying the effects. No trans-species changing guns would get past him, no gimmicky who-ze-whatsits that could logically work in the comic could help him, and with ability to stop webcomic artists in their tracks he probably couldn't be helped.
Any promise that the Editor made to Catnap was most likely either a lie or the Editor did take into account that Catnap's null powers could override the Editor's own. The moment the he rescue's the editor and wanders from the battle, he disappears from sight. If you recall, Catnap has the ability to recognize the fourth wall and know he's in a comic. He probably avoided being drawn any further to help the Editor. There would have been an exchange between the two most likely in secret. The Editor may have been reluctant to Catnap about saving him, told him about the fatal flaw of his character, and Catnap took it and left. Without the Editor to help him, there was no reason to stay in the war anymore, and thus left. I see it that ventured off to find a solution to his problem, one that would not result in him having to surrender his powers and be just a character again, roaming the vast infinite space of the internet for eternity.
Of course this is probably open to interpretation still. That was my take, the 3 of 8 page comic had a different ending in mind, and you do as well. All are acceptable choices.
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