• Gadgetry: Batman has enlisted Harold's aid in creating important gadgets for him for years, trusting him like family.[1]
  • Medical Science: Harold was able to successfully save Harvey Dent's life after removing three throwing stars lodged in the arteries of Dent's face, a very dangerous procedure.[2]
  • Multilingualism: Harold knows how to speak in sign language.


  • Mute: Though Harold is mute, he is able to communicate through sign language.



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Batman Family member
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This character is or was an incarnation of or an ally of Batman, and a member of the Batman Family. This template will automatically categorize articles that include it into the "Batman Family members" category.

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