Yes and no.
There are RPGMaker sheets included in the character sprite sets, but that is easier to do since the frames already exist - however to get certain map functionality to work (autotile) new iterations of existing map tiles would be necessary.
In other words I believe RPGMaker formatting for characters was not the original intention but a nice bonus provided by the author. Same holds true with the 3x upscale tiles (the base assets are in 16 x 16 format while RPG MV/MZ requires 48 x 48).