| According to a 1916 Japanese medical report, blood-type was found to be an influence on one's personality. It determined that Type-A blood reflected a mild, intellectual personality while a B-Type was typical of an aggressive, noisy persona. AB was sensitive and diplomatic. O belonged to the emotional and passionate. Although personality characteristics determined by blood-type has little more scientific basis than astrological charts, Japanese superstition still places a heavy weight on blood-type as a signifier of character. In this spirit, Anime Blood has been established to become the de facto collection and resource of information on anime character blood-types. |
| A | "Farmers": Calm, obeys rules, values relationships with others, very sensitive, cautious and careful. Advantages: Obedient, careful, sympathetic, empathetic, self-sacrificing, polite, studious, disciplined, outwardly serious, willing to compromise, honest, loyal. Disadvantages: Worries a lot, hesitant to express emotion, internally emotional, weak-willed, taciturn, stoic, indecisive, introverted, anti-social, wishy-washy, nervous, detached. The most common blood-type among Japanese. |
| B | "Hunters": Does things at his or her own pace, strong personality, optimistic, easy to get along with, adventurous. Advantages: Cheerful, outgoing, exuberant, optimistic, adventurous, active, sensitive, kind. Disadvantages: Forgetful, undecided, disorganized, noisy, spontaneous, prone to exaggeration, inclined toward dabbling in many areas although not focusing too heavily on any single thing. |
| AB | "Humanists": Well aware of his or her surrounding environment, hates instinctive feelings, critical, never takes things to the limit or to the best of his or her ability, tries to be useful to other people. Advantages: Sensitive, proud, diplomatic, discriminating, easy-going, sympathetic, efficient, delicate, considerate, learns quickly. Disadvantages: Short-tempered, complains, dependent, moody, brooding, strict and serious with themselves. |
| O | "Warriors": Strong sense of purpose, romantic, influenced by peers, good at organizing activities, very proud. Advantages: Confident, strong-willed, judgemental, dedicated, strong-willed, self-deterministic. Disadvantages: Workaholic, insecure, emotional, stubborn, uncompromising, cold personality, over-confident, self-centered. The most common blood-type among Americans. |
