If Fukubiki Man leaves a Shinkansen powerup behind during a boss battle, it will give Beraboh Man temporary invincibility for 40 seconds instead of the usual 20, and is worth 1000 points instead of the usual 500.
In the underwater stages, obstacles such as rocks pose no threat to Beraboh Man, but if he gets trapped between one and the left-hand side of the screen, it will drain his energy.