Continuing from that last post, Waluigi has, not counting Smash, actually had more important roles than Rosalina, no, seriously.
WL:
Mario Party 3
DDR
(arguably) Rabbids
(arguably) Power Tennis
Aces
R:
Galaxy
Galaxy 2
3D World
(arguably) Island Tour
WL:
Mario Party 3
DDR
(arguably) Rabbids
(arguably) Power Tennis
Aces
R:
Galaxy
Galaxy 2
3D World
(arguably) Island Tour