R.O.B., MarioWiki

R.O.B. (short for Robotic Operating Buddy) is an accessory designed for use with Stack-Up and Gyromite, both released for the Family Computer and its overseas equivalent, the Nintendo Entertainment System. In Japan, it is named Famicom Robot, short for Family Computer Robot. Though not a Mario character, R.O.B. has appeared in several Mario-related games, in the form of cameos and playable appearances alike. The first Mario-related game that R.O.B. appears in is WarioWare, Inc.: Mega Microgame$!

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R.O.B., MarioWiki

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R.O.B., MarioWiki

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R.O.B. - Super Mario Wiki, the Mario encyclopedia

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R.O.B. - Super Mario Wiki, the Mario encyclopedia