Hayate Gekkō

was the examiner of the preliminary third portion of the Chunin exams. The name "Gekko" means "moonlight" and "Hayate" means "quick as wind" or "hurricane". Both are names of Japanese fighter planes from World War II.

Abilities
Little is known about Hayate's abilities, except for a move which he used on Baki that failed. This technique is called Dance of the Crescent Moon, or Crescent Moon Dance (English Dub), which is an advanced technique that creates multiple clones of the user while the real person attacks from a blind spot from above. Baki comments that the village has talented ninja, seeing Hayate can use this technique and mastered it at such a young age. From this we also know that he owns a Katana, and possesses great speed, as he demonstrated during the Chunin Exams when stopping Neji from attacking Hinata.

Chunin Exams
At first sight, Hayate appears to not be in the best of health, as he has an unexplained chronic cough and bags under his eyes. He seems to be very skilled for his age, which Baki notes right before killing him.

Invasion of Konoha
Hayate was the first to discover the truth of the secret invasion plan between the Sound and the Sand, having been spying on Baki during his meeting with Kabuto Yakushi. Kabuto offered to kill Hayate himself, but Baki insisted that he himself should do it as an act of alliance between the Sound and Sand.

Hayate's lover, Yugao Uzuki, swore that she would avenge his death - a task that will prove difficult as his killer, Baki, is now their ally. It is unknown whether Yugao even knows that Baki is Hayate's killer.