The Pegasus Knot is the hardest, most difficult knot to tie. Its first appearance was in the episode, "Oh, What a Tangled Rope You Tie, Amazing Rope Guy", where Becky is trying to make the knot to get a Fair City Scouts badge. In the end, she used it to trap the Amazing Rope Guy with his own rope, using the Pegasus Knot to make sure he didn't escape.