No Metroid Prime? No Pikmin? Would anyone else like to admit what games they haven't played? In fact, we'll turn it into a game. In this post, I will include the full character select screen from Smash Ultimate. Look through it and list every series represented that you have not played a single game from. Note that I am asking for series, not character. For example, Ness and Lucas are in the game. If you have played Earthbound but not Mother 3, that's fine, you've still played a game in the series. Also, if you've played Earthbound Beginnings but not the other two games, that's also fine. (There was a brief period of time where that was the case with me as I played all of the Mother games in release order.) Though you can also include individual characters' games if you want as that could be fun.
Anyway, looking at the picture below, the other series I have not played are:
1. Street Fighter
2. Banjo
3. Tekken
Also, my only experience with ARMS and Splatoon are playing their network tests.
As for individual characters' games, I have never played Kid Icarus: Uprising, so I haven't played a game with Dark Pit in it, other than Smash of course.