Why Is Waluigi L Upside Down?

14 The Upside-Down "L" on His Hat is a Greek Gamma

Doppelgängers were historically symbolized in folklore and legends as bad omens or the personification of evil. Therefore, it makes sense that Nintendo not only made the symbol on Waluigi's hat look like an upside-down “L” but also the Greek letter gamma.

What is the symbol on Waluigi's hat?

Waluigi has a hat and gloves with a "Γ" symbol, which is similar to Wario's "W", which is also an upside-down "M".

Does Waluigi have a backstory?

The Mushroom Kingdom's Weirdest Orphan. Waluigi has no background and no family. Many assume Wario is his brother, but it seems that is incorrect. The Mario Party 5 manual clearly states that Wario and Waluigi aren't brothers.