R5-M4 was an R5 series astromech droid that assisted in mining operations on the planet Mustafar. He included a Burtt acoustic signaller.[1]
Behind the scenes
This droid was a toy made available exclusively at Disney Parks beginning on May 4th, 2016 in honor of "Star Wars Day."[1]
Sources
Star Wars: Droid Factory toy line (Pack: R5-M4) (backup link) (First mentioned)
Notes and references
In other languages