You can make your characters likeable or dislikeable by their description.
Which do you prefer?
She was tall and willowy,a beautiful blonde with a radiant smile.
She was small and plump with cropped carroty hair. With shifty eyes. that wouldn’t focus on you.
I know what you’re thinking. But it’s too late you’ve already made up your mind about who you prefer. It may turn out later that the blonde has poisoned three husbands. And the plump one is a surgeon that saved a dozen lives in a mine disaster. But the initial description between the two has coloured your judgement to begin with.