Goofy and parental.
Joseph Joestar, more often addressed as Mr. Joestar, is a sixty eight year old british-american old man. He doesn't like being called old because he's truly young in spirit. He enjoys teasing others at times, engaging in new cultures or customs, speaking with people, and playing practical pranks. He acts as young in his interests. However can be parental and fatherly toward those younger than him. Even if he himself acts immature. Which often leads him to trouble.