Yes, this was a real tank, not some Miyazaki fantasy. The T-35 was built in the years prior to WW2 when many countries were experimenting with the idea of the "land battleship" type of tank. The idea was that if the second world war would be fought like the first with lots of trenches and stalemates, these behemoths would break the stalemate.
However, the idea of high mobility won out and these types of tanks were quickly outmaneuvered and overwhelmed by superior numbers. And so the idea of the multiple turret land battleship came to a quick end.
I built this for my father (who loves land battleships) from the resin kit by Ostmodels. Even though Ostmodels is a small company run pretty much single handed by a school superintendent in Tasmania (really!), this little kit was a gem. Great detail and fun to build.
Paint is Tamiya. Weathered with oils, Vallejo, and powders by Tamiya and Bragdon.
Yeah, it appearaed in one of his illustrations. As far as I know, not a full comic, though (like the Return of Hans or Otto Carius, about a Panzer IV and a Tiger respectively).