When you find yourself trying to remember a show (or any works) that's on the tip of your tongue but just out of reach, come here - the collective brain of the TVTropes community can probably help. Post all the details you can remember (examples help). If you're looking for a trope, head over to Trope Finder. Have general questions about tropes? Visit Ask The Tropers!
I have the Dutch version of that comic in a collection along with different unrelated stories and given the Dutch title translates to "Return to excaliborum" that might be a good place to start. Though there is no guarantee that the other world has the same name in English or that it is even well known enough to be found in any articles.
A quick google search reveals that the English name is "Return to Shambor" though googling that only gives me a deviant art page for sonic fan fics
Edited by dutchguy1986
https://inducks.org/story.php?c=D+97630
Found it.
Number one fan of characters that appear only once and ultimately were a recurring character either in disguise or trying a new image.
There was a series of Mickey Mousse comics I remember where the premise was that Mickey owned this book that would suck him into a fantasy world. There was another mousse with an eyepatch and a mustache and I'm pretty sure there was a third mousse who was a princess. They were part of a rebel army I think. There was one installment of this comic where Mickey fell into a forest and ran into a temple that looked like that one M.C. Esher picture (the page image for Bizzarchitecture) on the inside. It started with Mickey being caught by a giant eagle or something where the other characters warned him not to go into the forest, so of course he fell off the eagle later. There's probably no article on this wiki because it's not wizards of mickey and there's nothing else like this on the main Mickey Mousse article.