User blog comment:Tarkatower/Top 10 Strongest Hellsing Characters/@comment-1145641-20160811213830

Hans is Stronger than Alucard, to the point he made the guy RUN AWAY in Dawn (whilst also fighting Walter and he didn't even go into full wolf form). He lost to Seras on purpose. Anyone with eyes could see that. Walter couldn't beat him in youth or later in old age, so I don't know what he's doing at number 2 while Hans is at number 4.

Ultimately, it's hard to place Hans since he doesn't really fight, but what we have seen is that he has caused Alucard to run away. He's beaten Walter to a bloody pulp before/would've killed him if Alucard didn't step in. He was trouncing Seras and literally GAVE her the tools to kill him, otherwise he would've undoubtedly won. He's beaten/could've beaten some of the best combatants in the series (sans maybe anderson, if those blessed blades of his are made of silver).

Easily, he's number 1.