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Welderberg is an odd hairy creature in the third dimension of Flipside and Flopside in Super Paper Mario. He seems to be able to flip dimensions, and make gateways through them, and is also skilled at making Warp Pipes in a few seconds. Welderberg can make a pipe from Flipside to Flopside for 300 coins, as well as pipes between the B2 and second floors of both towns for 100 coins each.
"That's Welderberg... Give this pipe maker coins and he'll dig pipes for you... He might not look like much, but he's a master at his specialized craft... If you've got the coins to spare, you should have him dig you a pipe..."
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