Waluigi/Relationships

This is a relationship of Waluigi.

Wario
Wario and Waluigi are brothers/partners in the SMG4 universe. (it is unknown whether they are brothers in official canon or not) The two are the main anti-hero protagonists of The Wacky Wario Bros. series, where they go on ill-fated adventures in an attempt to get rich. Neither brother is above harming the other to get an advantage, and they tend to fight a lot.

Mario
Waluigi is a major obstacle to Mario in the bloopers Retarded64: Retard karts 101 and Super Mario Attorney. In the former, Waluigi is the racer that gives Mario the most trouble, and in the latter, he is the opposing side's lawyer.

Luigi
While Waluigi is Luigi's self-proclaimed rival, he has yet to be seen directly antagonizing him in SMG4's bloopers. But he can be sometimes having a friendly term, as seen in We are number one but it's a Waluigi parody.

His Rubber Ducky
Waluigi is shown to have a strong affection for his Rubber Ducky, dressing him up in a Waluigi hat and squeaking it all the time, which annoys Wario. Whether the Rubber Ducky likes him or not us unknown, since in SM64: Ssenmodnar 8 (150k Special), it shot him in the head.

Real Life SMG4
He hates SMG4 in real life, because he put him in a freezer, freezing him.