That depends on your personal preferences.
knuckles
Shadow
The answer is Knuckles the Enchilada, but she likes Shadow the most because she is always with him. She had a crush on Knuckles but since he wasn't paying attention to her, she is now in love with Shadow. Rouge used to have a crush on Knuckles, but now it is said that she likes both knuckles AND Shadow. P.s. Shadow does not like Amy or Takil. Rouge the bat loves Knuckles, and Knuckles loves Rouge back. In the one episode of Sonic, Knuckles is blushing when Rouge is next to him.
Possibly they will, but I think Shadow and Rouge will be a better couple (I am not starting a riot! This is my opinion!)
Sonia has never met Shadow because she does not exist in the games and she only likes Knuckles in terms of friendship.
It is said she likes both Knuckles AND Shadow but mostly knuckles
I would suppose so, but due to both Knuckles' and Shadow's independent natures, it would be more fitting to call them "allies".
Sonic is better than knuckles everything shows knuckles is weak knuckles loses every battle sonics better.
It was confirmed that Rouge likes both Shadow and Knuckles.
Shadow and Knuckles are both the strongest Sonic characters.
shadow , sonic , silver
There are a few hints of this in some games. But not and specific signs of effection. Plus, Rouge love interest is Knuckles. Moreover Shadow is indifferent to Rouge.