Raito Kurōzu presents a perpetually cheerful and easygoing persona, radiating positivity with a constant smile and showing no visible distress over setbacks or danger. This carefree attitude masks his true role as an undercover agent for the Buddy Police. His mission focuses on investigating the threat posed by the Lost World cards. To gather intelligence from within the enemy's ranks, he publicly pledges allegiance to Vile Ranma. This infiltration culminates in episode 28, where his Buddy Police affiliation is revealed to figures like Yuga Mikado and Garga. During this operation, he deliberately encourages Ranma to empower Dan with Lost World abilities, aiming to escalate the threat and facilitate police intervention.

While typically lighthearted, moments of intensity or shock cause his eyes to open fully, signaling seriousness. This occurs notably when confronting Ranma about joining forces and during critical Lost World developments. He demonstrates combat skills through sanctioned Buddyfights, though his recorded matches end in defeat: an early ABC Cup loss to Mamoru Sekai, a training match defeat by Yuga Mikado in episode 33 to demonstrate Darkness Dragon World tactics, and a later loss to Tasuku Ryuenji in episode 41.

Raito's character is marked by a strained relationship with his father, the prominent Buddyfighter Gaito Kurōzu, known for his obsession with strength and frequent invocations of "destiny." Raito harbors a distinct aversion to this concept, openly despising the term. References to Gaito provoke visible distress, leading Raito to deliberately avoid events associated with him, such as skipping Yuga Mikado's ABC Cup victory ceremony. His path as a Buddy Police investigator further distances him from his father's legacy and beliefs in predestined outcomes.