81 : The — X Fight X Begins

: The episode highlights the sheer durability of the Chimera Ants. Despite taking massive damage, Rammot survives and is rescued by his commander, Colt, which leads to the ants becoming aware of Nen-enhanced humans .

“Gon and Killua get a pretty cool moment when they finally get to unleash their Nen powers. Killua shocks and paralyzes Rammot, while Gon gets in his Rock punch right in Rammot's stomach.” Reddit · r/anime · 9 years ago 81 : The x Fight x Begins