Lyon is a cold and calm Mage but he can also be driven by his emotions and instincts, such as during the delegates' meeting, he rushes into the woods following Natsu Dragneel. He takes his goals and dreams extremely seriously, even to a fault, this lead him to try to reverse the freezing of the immortal demon Deliora just to try to fulfill his dream to surpass his teacher Ur. Lyon is deeply in love with Juvia Lockser, who he fell in love with at first sight. He tries to separate her from Gray Fullbuster, the person whom Juvia loves, much to Gray's annoyance.