R.O.B. (USBIV)

R.O.B. (abreviated as Robotic Operating Buddy) is an unlockable playable character in Ultra Smash Bros. IV and makes his third appearance in the Super Smash Bros. series. He was confirmed at the Famicom Smash Week naturally belonging as a Famicom character, alongside with the Ice Climbers at the same day, Duck Hunt, Little Mac, Dr. Mario and the newcomers Excitebike Rider and Black Mage, including Mr. Game & Watch. As a Nintendo character, R.O.B. appears as a accessoire in the games Gyromite and Stack-Up! for the Nintendo Entertainment System. His special ability is rotating gyros.
R.O.B. voiceclips are reused in Brawl. He doesn't have voice acting since he has robotic sound effects.
R.O.B. ranks the 19th place of the 103rd (A), placing him after Rosalina and behind Ice Climbers, making him as a stable top tier character. This is a notable rise for R.O.B. being a mid-tier character in Smash 4.