A Boy and His Blob Cheats (Nes)

To kill the giant king blob when your blob is locked in the cage, throw an apple jellybean
by pressing the throw button and running toward him.

Use the honey jellybean 50 times, and you will have unlimited beans.

When you first arrive in the Blob's world, go left until you can go no further. Toss a
jellybean against the left side of the screen and usually the jellybean will just roll
off. Run back and forth tossing a jellybean against the left side of the screen and if
your lucky the jellybean will be tossed to where the Emperor is and you will get a
glimpse of the final scene where you fight the emperor. The code has been activated.
Proceed to the right and you will find that almost all of your enemies have
  disappeared including the cherry bombs, marshmallows, and popcorn.

After you gain all of the gems throughout the game, return to the starting point. Then run
all the way to the right until you see a large building. Run into it to receive extra
vitamins of all kinds.

Toss the blob a Honey jellybean then during transformation, toss it a Ketchup jellybean.