David is the most hidden guardian, as his job tends to deal with the harsher side of things. As an executioner, not only does he clean up after the battles, but he also isn't afraid to harm anyone who threatens him or Freak-Quency's integrity. Despite being fairly quiet, we know that he takes way too much enjoyment in his job, and has a streak of loneliness, due to how he's separated himself from the rest of the guardians.

David likely has a very low, serious voice, with a hint of sarcasm on the more carefree lines. He's also a fairly quiet character, only speaking when necessary.