Duster using the Rope Snake.
The Rope Snake is a character and item in Mother 3. Duster buys the Rope Snake from a ghost merchant in Oshoe Castle during Chapter 2 for a Rotten Eclair, which the ghosts use as a form of currency. Duster can use the Rope Snake to cross gaps in the Castle by using it to grapple onto candle holders.
The Rope Snake doesn't appear again until the end of Chapter Five, as Lucas's party reach the top of the Thunder Tower. After Yokuba falls slips on a banana peel off the Tower, Lucas's party uses the Snake to grapple onto the Pig Mask Army Mothership. As they grapple onto it, the Masked Man tries to shake them off. Unfortuanantly, the Rope Snake says he wasn't made to "hold three people and a dog." As such, Lucas, Boney, Kumatora and Duster fall off.
The Rope Snake, along with Duster, fall into Saturn Valley and are taken in by the Mr. Saturns. The Rope Snake has become depressed over his inability to function well as a Rope. After being saved from the Pig Mask Army, the Rope Snake assists the party in leaving Saturn Valley by grappling a bird cage machine. Once again, the Snake Rope falls.
He isn't seen again until after ending. He has changed name to the Snake Rope to reflect his success as a snake.
Super Smash Bros. Brawl
Lucas using his tether recovery, the Rope Snake
The Rope Snake appears in Super Smash Bros. Brawl. He is Lucas's grab mover, which can be used as a tether recovery, used both to grab opponents to attack them and to grapple onto edges so Lucas doesn't fall to his defeat.
One of Lucas's taunts will cause him to play with the Rope Snake before putting it away.