The Robotic Operating Buddy.
This guy was released back in the mid 80s as a physical accesory for the original NES, he would act as a second player for only a couple of games and it’s system was pretty clunky; In order to press the buttons on the 2nd controller R.O.B. needs to slowly drop spinning tops (of all things) on the buttons and they would sometimes fall over, it wasn’t good…
Anywho! This curious apparatus dissapeared from most of the collective minds of Nintendo fans until it re-appeared in Super Smash Bros Brawl as an antagonist in the brand new story mode “The Subspace Emmisary” it was a veeeery random moment and i remember just sitting there wondering “who the f#$k is this random robot character and why is he a playable character?!”, and that’s part of the beauty in the Smash series, it honors Nintendo’s legacy by rescuing from oblivion many of their forgotten ips, such as R.O.B. , a forgotten toy who’s now remembered thanks to these games.
And that’s one of the reasons I love the Smash series so much <3