Well yeah. Millennials go from basically the 80s through the 90s up until the super early 2000s. Once we start talking about Nintendo DS and such, that's like early zoomers. Blaze the Cat, Silver the Hedgehog, etc. These are characters that would have debuted around then (despite the franchise itself being older) and would count TECHNICALLY. Same with Kirby, he's older, but once we talk about Triple Deluxe, Robobot and such, that's more zoomer era I'd say (still fun as bananas though.). Post-Super Star content beyond music and spirits would be really appreciated. I'd say Star Allies is a good place to start when it comes to looking for Kirby characters/inspiration.
ONE OF THESE DAYS, Fortnite will be acknowledged, maybe not RIGHT NOW... but it's simply too big, even I can see that despite never having played it. One day some day, it'll be there.