http://www.gamefaqs.com/portable/gbadvance/game/35016.html
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Missing Namek Locations
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The missing Nameks are scattered all over the World. Here are the locations:
1.) Go to the Northern Wastelands and check your Scouter. There is a Lv. 30
Goku Character Gate. Open the gate and throw the switch. This creates a
bridge to cross the gap so you can access the Namek.
2.) In the Northern Mountains, Piccolo has a Lv. 30 Character Gate. Behind it
is a missing Namek. ( Thanks to Bobbe from the Gamefaqs message board for
that one)
3.) On the 4th floor of Appartment B in West City.
4.) Go to the Mayor´s house in West City. You´ll find him walking around in
the Kitchen. ( why is he in the Kitchen if Nameks don´t eat? They only
drink WATER. lol)
5.) Near the end of the Tropical Islands, there is a Lv. 35 Vegeta Character
Gate. Before going through the Gate, continue to the ( E). There is the
Namek.
6.) Go to the forest ( S) of Goku´s House in East District 439. There is a
Lv. 30 Vegeta Character Gate. The Namek is in the ( NE) part of the area
in a secret area. If you have the upgraded Scouter, it will be a big gray
square. Go to the area right beneath it ( looks like a pot-handle) and
near the end, walk into the trees.
7.) On the ( NW) corner of Kami´s/Dende´s Lookout.
