If you adore Hellsing then you'll appreciate Trinity Blood. Some people believe Trinity Blood based its ideas off Hellsing. But I disagree. The both do indeed have a similar story line but there are some major differences. I don't want to be a total spoiler but Alucard is a protestant knight who works under Hellsing and will kill anything and everything. Were Fr. Abel Nightroad is a Roman Catholic who works for the Vatican and vows to never kill another human being and constantly atones for his sins when in vampire form. I really think deep inside Alucard is a sweety as well as Abel, they both realize what has become of them and tries to deal with the consequences. The are indeed similar but of coarse are very different.