Dr. Fooler is another of Tezuka’s mad scientists.  Childish, both in his appearance and in his behavior, he is nosy and pushy and often worms his way into business he should not be part of, or pushes forward ill-conceived scientific projects against the better judgment of wiser scientists.

He appears frequently in Astro Boy (1952-68), though generally not as a villain but rather as the accidental cause of great calamities.  However, he is probably best known for his recurring roles as Dr. Kani in Black Jack (1973-83) and as Dracula‘s hemmorhoid-plagued, vampire-hunting arch-nemisis, Professor Hellsing in the comedy Don Dracula (1979).

(Source: Tezuka in English)

After living in Transylvania for several years, "Earl Dracula" (as Osamu Tezuka's official website calls him in English) has moved to Japan. In the Nerima Ward of Tokyo, he and his daughter, Chocola, and faithful servant Igor have taken up residence in an old-Western style house. 
While Chocola attends Junior High School, Earl Dracula is desperate to drink the blood of beautiful virgin women; an appropriate meal for a vampire of his stature. However, each night that Earl Dracula goes out on the prowl he finds himself getting involved in some kind of disturbance which leads to him causing various trouble for the local residents. With nobody in Japan believing in vampires, his very presence causes trouble amongst the people in town.

Passed away on August 29th, 2011 due to stomach cancer.

Ayrton Cardoso was a Brazilian actor and voice actor.

After living in Transylvania for several years, "Earl Dracula" (as Osamu Tezuka's official website calls him in English) has moved to Japan. In the Nerima Ward of Tokyo, he and his daughter, Chocola, and faithful servant Igor have taken up residence in an old-Western style house. 
While Chocola attends Junior High School, Earl Dracula is desperate to drink the blood of beautiful virgin women; an appropriate meal for a vampire of his stature. However, each night that Earl Dracula goes out on the prowl he finds himself getting involved in some kind of disturbance which leads to him causing various trouble for the local residents. With nobody in Japan believing in vampires, his very presence causes trouble amongst the people in town. 
(Source: Wikipedia)

Fooler Hakase