Man, crossovers can be such a headache to figure out sometimes! The 'Henry Danger' and 'The Thundermans' crossover is one of those fun, chaotic episodes where the lines blur. Officially, Nickelodeon treats it as a special event, so it’s technically canon within both shows’ universes—but let’s be real, it’s mostly just for laughs. The plot has Phoebe and Max Thunderman teaming up with Henry and Captain Man to stop a villain, but it doesn’t really impact either show’s continuity afterward.
That said, if you’re a stickler for lore, you might argue it’s 'soft canon.' The characters reference it lightly in later episodes, but no major consequences stick. It’s more like a bonus adventure where the rules bend a little. Still, it’s a blast to watch—especially for fans of both series who just want to see their favorites interact. The energy is pure Nickelodeon chaos, and that’s what makes it memorable.