you fight the robot on jungle planet
If you have already defeated the dragon then there is nothing you can do, but if you didn't defeat it then see if the person who created poptropica has a e-mail address and email him what happened.
Dodge their shots and fire back : three shots should knock any of them out. But you don't have to fight them, just get to a planet and land.
You can "fight" a sumo wrestler in Red Dragon island and on the free mini game inspired by the island.
Sir Peleas is at the lair of the Fearsome Fire Beast, inside the volcano on the Fire Planet. He will give you the Ice Arrow to fight the robot dragon.
Solve the puzzle door and enter to fight Mordred's robot suit, first as Merlin then as your character. (see related question)
You fight the Fearsome Fire Beast (dragon) at the bottom of the volcano on the Fire Planet. You will use the Ice Arrow given you by Sir Peleas. (see the related question)
The "end of the volcano" is meeting Sir Peleas and fighting the Fearsome Fire beast (a robot dragon). Completing the dragon fight sends you and Sir Peleas back to your spaceship.
The knights will tell you of a secret asteroid hidden in the Asteroid Belt. Go there, and you will find it near X-11 Y-84. You will need all three knights to pull out the Golden Key and open the portal to the castle in a distant galaxy. You will fight the Binary Bard (Mordred) in his robot warrior suit. (see related question)
You must defeat the creatures on all three planets (jungle, ice, and fire) before you can find the Princess. There is no specific order to beating the three planets. Once you have all three knights with you, travel to the giant asteroid at X-11 Y-82.
you have to get the shild frome the soulder and whene you go to fight the panther willshout snow balls and sharp ice you have to block the sharp ice and with the snow balls you have to go under themeand it will hit the yellow circuls on panther
You can't. You must beat all three planets and take the three knights to the giant asteroid. (see the related question and try again)