Aiwei

"earth"

- I'm a truth seer. When people lie, their breathing and heart rate increase. I can sense the most subtle of changes.

Aiwei is the assistant of Zaofu's leader, Suyin Beifong, as well as a very capable truth seer.

History
In 171 AG, a few weeks after Harmonic Convergence, Aiwei personally greeted Avatar Korra and her companions, who had come to Zaofu in search of a new airbender. When Korra claimed that she and her three friends were the only ones to have arrived, Aiwei detected that she was lying. However, he did not call her out on that until after they met with Su, at which point Korra was then forced to confess that they came with Republic City's Chief of Police, Lin Beifong.

The next day, Aiwei approached Lin as she was hassling two guards who were chitchatting. He noted that she was visibly stressed and offered the business card of an acupuncturist to help resolve her issues.

Abilities
Aiwei is well-versed in the practice of specialized techniques within earthbending, as he is able to both metalbend and use seismic sense. His use of the latter gained him the title of "truth seer", due to his capacity to detect lies based on minute changes in the breathing patterns and heart rates of individuals with whom he interacts. According to Suyin, Aiwei's sensory abilities attest to the fact that there are no secrets in the city of Zaofu.

Trivia

 * Aiwei's use of his sensory abilities to detect lies and protect his city bears a resemblance to Heimdall, the gatekeeper of Asgard in Norse mythology.
 * Because he often uses seismic sense to detect truths and lies, Aiwei always makes his rounds in the city barefooted.
 * He is the first known person to use seismic sense who is not the Avatar or a Beifong.