In Desperate Struggle, the seventh ranked assassin, Ryuji, uses the horse saber, or something similar to it. In the game, it will follow travis around the arena and attack him.
No More Heroes Wiki
Believe it or not, Suda51 Wiki has more information about No More Heroes and its sequel than you'll find here. Come check us out!
READ MORE
In Desperate Struggle, the seventh ranked assassin, Ryuji, uses the horse saber, or something similar to it. In the game, it will follow travis around the arena and attack him.