Mario OC time!

You know how the Mario world seems predisposed to having characters be twins? You know how I said that I see Grubba as Tubba Blubba's uncle, not his father...?

Meet Tuber Blubba, Grubba's identical twin brother. Although they don't really look all that much like twins anymore since Grubba has been keeping himself young and healthy with an incredibly good workout routine that isn't suspicious or monstrous at all.

There wasn't always a rift between these two. They were two happy little peas in a pod until their parents both suddenly died while they were in their teens and left them the family farm in the will, only for the Rougeport banks to come a-knockin' at their door threatening to seize that lovely little patch of land over unpaid taxes and mortgages. Tuber, never much of a fighter, suggested that they cut their losses and move to the Mushroom Kingdom. Grubba, more headstrong and stubborn than his brother, had a wacky scheme - he would compete in a famous Rougeport fighting tournament and use his newfound star power to win back the farm and save the day.

And things seemed to work out for Grubba! He became a star fighter, won back the family farm and turned it into a gorgeous (and tacky) mansion with a swimming pool, and is now rich and famous and beloved by all as he runs a popular fighting ring in the clouds. Meanwhile, Tuber just kinda settled down near the Forever Forest, married another vegetable farmer, and had a big son that gets bullied a lot by the local Boos.

So why does it seem like there's something terribly wrong with his brother...?

(and before anyone asks, yes he does eventually find out and yes, he has to fly up to Glitzville and sort out all of Grubba's paperwork and belongings after he gets beaten by Mario and later arrested)