Stage 42
This stage contains two Heitai (from Toy Pop, 1986), two Pachicks and two Poppy Knights with one Pot; it is also worth noting that the Bonus Character for this stage are the 400000-point Libble and Rabble, who count together as a single character, and have previously appeared in Libble Rabble (1983).
Stage 43
This stage contains two Heitai, three Moonils, two Timbots, and two Pachicks (but only five of them are present at the outset); it is also worth noting that the Bonus Character for it is the 450000-point Mappy, who has previously appeared in his self-titled game (1983) and Hopping Mappy (1986). A parade float of him has also appeared on the second bonus stage of Marvel Land (1989) - and he is the last character in this game to have had one in that one.
Stage 44
This stage contains five Pookas (from Dig Dug, 1982), one Clipper, and three Timbots; the Pookas start fenced-in at the top of the maze, and will pass through the walls once the Clipper and Timbots have been killed. It is also worth noting that the Bonus Character for this stage is the 500000-point Dig Dug himself (or "Taizo Hori", to give his real name) - who has previously appeared on both his aforementioned self-titled game, and Dig Dug II (1985).
Stage 45
This stage contains nine Pachicks (but only five of them are present at the outset); it is also worth noting that the Bonus Character for it is the 600000-point Ki, who has previously appeared in The Tower of Druaga (1984) and The Return of Ishtar (1986). There are only two more stages left to go now.
Stage 46
This stage contains two Moonils, one Clipper, three Pachicks, and two Poppy Knights (but only four of them are present for the outset); it is also worth noting that the Bonus Character for it is the 765000-point (Namco's goroawase number x100) King who previously appeared in King & Balloon (1980).
Stage 47
This stage has: five Heitai, two Stingers, two Timbots, two Pachicks, two Poppy Knights, two Moonils, two Fygars (also from Dig Dug), and two Pookas, with two Pots (but only the Heitai and the Pots are present at the start); it is also worth noting that the Bonus Character for it is the 1000000-point Lucky Flag which has previously appeared in New Rally-X (1981). Once you have cleared this stage, you will proceed to the Final Battle against Maō himself, who can generate an infinite number of Blinky Clones in his first two forms (he can also summon up an infinite number of Crystal Rods in his first form).