7/10 She likes Pizza! I like Pizza!
Shadow Kirby from the Kirby series.
In a lot of mediums, the dark doppelganger trope is usually a character that represents the worst possible version of the original. Dark Meta Knight is an example of this. Whereas OG Meta Knight is heroic and noble, Dark Meta Knight is a mirror world counterpart who is ruthless and shows no mercy, stemming from Meta Knight's darker qualities. Shadow Kirby is similar to Dark Meta Knight in that they come from the Mirror World, a parallel world to Kirby's world. What is different from Dark Meta Knight is that Shadow Kirby isn't evil or isn't some edgy anti-hero like Dark Pit from Kid Icarus. Shadow Kirby is just a happy go-lucky puffball who loves to eat, makes friends and protect his world from dangers like Kirby, essentially making him less like a dark doppelganger and more like a clone or twin of Kirby. Why? That's because whereas Meta Knight has the potential to be an evil villain which lead to his mirror counterpart, the sinister Dark Meta Knight, Kirby is revealed to not have a single evil quality to take root from as in... lol... Kirby's just that pure and innocent for this world lol and thus Shadow Kirby is also just as pure and innocent as OG Kirby.