tbh I don't really remember covers since I don't give them much attention, not even american capeshit where it is apparently a bigger deal. for the disney stuff it's just a random image that may or may not have anything to do with the stories in the book itself, I'm not even sure they're consistent across countries. plus there were several different formats of books released at the same time which sometimes got recycled in the pocket books or were a continuation of them (which happened rarely but was annoying af).
as for mickey with a bat, I wouldn't be surprised. even when I read them in the 90s some older stuff from the 70s/80s was already stretching it, and these days it would cause some people have an outright shitfit (like the whole "think of the children" violence and some gender stuff that was simply not much thought of back then).
the other thing that made me think after writing that previous post is euros probably have a different connection with mickey, and disney in general. dunno how it was in the US, but over here those comics were everywhere - supermarkets, kiosks, everywhere you could by sweets you could buy those comics. sure, we had the usual disney stuff like duck tales and later in the 90s they brought the TV show over, but those comics go back decades. they were also cheap enough you could buy them each month. getting comics as thick as your thumb for the price of a happy meal was just a good deal all around for a wee lad. and more importantly that shit was
actually fucking good. I still remember some stories from 20 years ago, and there are even some I totally forgot which the wikipedia article reminded me off. fucking blast from the past. and that's considering the already high quality euro comic scene it had to compete with. I couldn't even imagine growing up without them, and before that my parents, maybe even grandparents.
so when someone mentions mickey mouse I don't think necessarily of steamboat willy, and more him being a detective/consultant in duckburg going on space adventures or doing his version of narnia when not traveling through time (like the
panettone was "invented" because goofy is literally shaggy from scooby doo sometimes and told someone in the past)