Before the Calamity, Link was a fairly well reserved person, only following directions as they had been told to him. His appointment as the Princess’ knight had drawn him into a closed off, and more tense demeanor, that which reflects the responsibility he feels to the kingdom of Hyrule. As Zelda had her problems with him, he equally had his own gripes. However, as the two got to know one another, he really began to grow a respect for the princess, and is more willing than ever to throw his life on the line if it meant protecting her.

After the events of the Calamity and Link’s 100 year sleep, his personality would shift. Having forgotten his memories, he’s a little less reserved and more of his old self before being appointed to Zelda’s Knight. He can be aloof, and pretty clumsy as well. However, his amazing dexterity and combat skills make up for this, as he can virtually pick up any weapon (or non-weapon) and use it skillfully in combat. If it weren’t for the Master Sword choosing him, he probably would have still been appointed as Zelda’s Knight regardless.

Link is selectively mute, and knows how to sign in multiple versions of Hylian sign language. Another one of Link’s interests besides cooking is trying new hobbies- that’s how he learned the different variations of Hylian, it’s also how he’s managed to work well with weapons other than just the sword in any situation, as well as his knowledge of the Hyrulean cuisines. He knows all the ups and downs of handling animals as well, could very well be considered an animal whisperer- this is ever apparent with how he treats his horses and his fondness for dogs.

In a social setting, Link tends to keep to himself, only chiming in when he feels it’s necessary. He can be sarcastic and witty, and is wonderful with children. Link isn’t afraid to break gender norms and go full blown crossdress if the situation calls for it- he’s not really a fashionista though, he would wear anything as long as it did what it needed to (i.e. wear a jacket to keep warm in the cold, etc).

Link can and will get distracted easily, he could be on a mission to one place, but go a roundabout way for the fact that he saw a rupee and wanted to pick it up- then he happened to spot a mushroom, and another, and another– Link is a packrat. He’s more than likely to have something on his person for no reason whatsoever (i.e. if someone asked for an apple he’d have one out on the ready).
By himself, he wouldn’t be afraid to do something stupid given the chance. It’s how he travels, meets people, and unknowingly solve puzzles set out for him. You could call these “Happy little accidents”, as he really has no clue what he’s doing most of the time, and when he achieves something, it’s satisfying in a way that’s like “oh, neat”.  In a social setting tries to keep himself humble, and is always more than willing to lend a hand to anyone that needs it.