Bocadin, also known as Oxnard, is a male hamster character from the Hamtaro series. He is owned by Kana, who is the best friend of Hamtaro's owner, Laura. In some interpretations, his owner is identified as Carla. He is a large, mottled gray hamster, and his most defining physical trait is his round, somewhat plump appearance which sets him apart from many of the other slimmer hamsters.

In terms of personality, Bocadin is best known for his gentle and easygoing nature. He is not the sharpest or most clever of the Ham-Hams, often described as rather dim, but he is incredibly loveable and good-hearted. His most prominent characteristic is his enormous and constant appetite, particularly for sunflower seeds, which he is rarely seen without. Despite his large size, he is frequently portrayed as being timid and somewhat cowardly, often shying away from dangerous or frightening situations. However, his friends know that beneath this fearful exterior lies a core of hidden bravery. When truly necessary, especially to help a friend, he is capable of reaching deep within himself to find the courage to perform valiant and heroic deeds.

Bocadin's primary motivation is simple: friendship and food. He enjoys spending time with his fellow Ham-Hams and is fiercely loyal to them. He holds a deep, unspoken love for a female hamster named Pimienta, who is a country hamster living with an owner. His affection for her is a significant emotional driver, as he often dreams of her and gathers the courage to express his feelings. In one notable instance, he traveled to visit her and finally managed to shout his love for her, showing significant personal growth.

Within the story, Bocadin serves as a loyal and steadfast friend to the protagonist, Hamtaro. He is considered one of Hamtaro's closest and best friends, often accompanying him on his daily adventures around the neighborhood when their owners are away at school. He is a core member of the Ham-Ham club, a group of pet hamsters who gather to socialize and solve problems. His role is often that of the supportive sidekick, providing comic relief through his constant snacking and moments of fear, but also demonstrating quiet reliability.

Bocadin's key relationships are central to his character. His friendship with Hamtaro is the most prominent, as the two are almost always seen together. He looks up to the more adventurous Hamtaro and is always ready to assist him, even if reluctantly at first. His romantic interest in Pimienta represents a significant part of his personal development, pushing him to overcome his inherent shyness. His relationship with his owner, Kana, is typical of a pet and owner, though his primary social world is with the other hamsters.

Regarding character development, Bocadin shows a subtle but noticeable arc. While he remains a timid and food-loving hamster at heart, he experiences moments of genuine bravery, particularly in the context of protecting or impressing his friends. The episode where he confesses his love to Pimienta is a high point of his development, showing that he can overcome his fears for the sake of his emotions.

In terms of notable abilities, Bocadin does not possess any special powers or unique skills. His primary ability is his capacity for loyalty and his hidden well of courage that emerges in critical moments. His physical strength, likely due to his larger size, is sometimes implied but never a central focus. He is notably adept at finding, carrying, and consuming large quantities of sunflower seeds, which could be considered his most practiced skill.