After you beat the game you can go to that Ninja castle, there will be a Ninja after you
break the door when you go in, he will say to get him some bandanas and he will give you
Hercule exhibits for every bandana. (he will run out eventually though)

equip bandana when going to thieves den there will be a door with two guards that will
not fight you when you go near them instead they will tell you to go away but if you're
wearing the bandana they will let you in

When your on a misson to get the dragon balls put a bandana on when u go to 2 guys and
they dont atk talk to the one inbetween the walls when yuor wearing a bandana then he will
let you p*** go to the end of the village and enter the building go to the last floor and
go p*** the big guy when your near the table then press a when your in front of the dragon
ball when the monkey takes your bandana just run out but u need a lazuras crystal for that
because it revives u evry time

In the DragonBall saga, go to the Theives' Den and talk to the two theives. (You have to
have a bandana equipped)