Two characters engender the most adoration and continuing fascination from Star Trek fans, Spock from the Original Series, and the Next Generation’s Data.
Both characters are fish out of water. As a human/Vulcan hybrid, Spock struggled to reconcile his desire to embrace and apply the Vulcan philosophy of logic above all with the need for friendship and connection his human half demanded. For Data, human emotion and understanding were the goal. Superior in every other way to his shipmates, Data often found himself unable to partake in the simple pleasures they enjoyed, or even to share their sorrow or pain. He and Spock often found themselves accused of insensitivity they didn’t understand, and certainly didn’t feel, by those around them.
Though Spock and Data’s superiority made them outsiders, their perceptions of that superiority were not the same. Data wanted to be more human. He said in the Next Generation’s pilot episode he would sacrifice all his android abilities to reach that goal. Spock, on the other hand, accepted his superiority, even reveled in it. His problem was not his nature, but the conflict within it. Only gradually did Spock allow himself to incorporate the best aspects of his human half into his overall being.