Hunter x Hunter (2011) - episode 84 - 15 Jun, 2013

As Gon, Killua, and Kite approach the nest, one of the Chimera Ant Royal Guards, Neferpitou, awakens. Rammot is humbled by their aura. Neferpitou discovers Pokkle hiding himself among corpses and proceeds to extract the human's knowledge of Nen for the Chimera Ants' use. (Source: Wikipedia) Chimera Ant arc: (9/61)