Nixon was a character but in this context from Yahoo! Movies:, his name needs two more characters to make it possessive:
Nixon’s visage and flexibility are the subjects of that sentence, and a plural subject calls for a plural verb (have, not has). The commas go before the closing quotation marks (at least if you’re in the U.S.). And finally, the last sentence wasn’t spared a typo with the misspelled sparred.
