When he was young, Caesar and his siblings were seemingly abandoned by his father, making him a bitter and extremely violent delinquent. When he was saved by his father from the Pillar Men's trap at the cost of his life, Caesar changes his hate into great pride in his family name.[3]

Caesar is introduced as an arrogant Ripple User looking down on Joseph Joestar's sub-par Ripple ability[4] and missing no occasion to ridicule him and antagonize him in general. However, he reveals himself to be an honorable man, taking pride in his family's tradition of battling evil as well as wishing to avenge the death of his friend, Mark, at the hands of the Pillar Men.[5] When Joseph reveals himself to be an honorable individual as well, their relationship considerably improves. In general, Caesar is respectful to his elders and superiors, most notably his master Lisa Lisa. When it comes to his peers, while he maintains at best shallow relations with those around him, when he truly cares for someone, it is true love, best evidenced by his relationship with Joseph (and pointed it by Messina).