Midvalley is one of the gunho gunmen. My favorite one. Not much is known about him, almost nothing is, except for that he is one of the gunho gunmen and plays the sax.

 

Leader of the Gunho gunmen, Legato Bluesummers is under the control of Knives. He is on a mission to destroy Vash the Stampede, as instructed by Knives. Using the gun-ho gunmen, he sets out to destroy Vash, but ultimately gets destroyed by him.

 

Legato Bluesummer's voice actor is Richard Hayworth.