This page explains in detail the interactions between the Mother series and the Zelda series.
Mother 3[]
April 20, 2006
The Rope Snake item in the game is a snake that can be used as a whip to swing over gaps. Its name is believed by some to be based on the Rope enemy from the Zelda series, also considering that they look similar, though this might be a coincidence due to both being snakes.
The Legend of Zelda: Spirit Tracks[]
December 7, 2009
The Whip item in the game is shaped like a snake, and can be used to swing over gaps. This time it's been officially confirmed to be based on the Rope Snake from Mother 3.
A Whip item returns in The Legend of Zelda: Skyward Sword with a similar usage, but it's no longer shaped like a Snake.
License[]
Copyrights for both series are held by Nintendo.