@zym:
I don't know why this just hit me, but does anyone know if it was mentioned what Ging's nen ability is? I vaguely remember Netero mentioning he is one of the 5 best nen users in the world, but I don't recall any explanation.
Dunno. They've never expanded on it. Considering nen is very personal, I suppose it has something to do with Ging's desire for knowledge and thirst for exploration.
I'm actually pretty interested in the identities of the Top 5 Nen Users in the world.
! At one point Netero was #1, but then so was Maha Zoldyck (Netero is the only person to survive fighting Maha Zoldyck). Maha, however, has become much weaker due to his advanced age, and we don't really know how his son (Zeno's unnamed father), Zeno, and Silva compare overall. Zeno says he's weaker than Netero during the Chimera Ant arc, with Morel and Knov stating that Netero was still pretty much the #1 user. Silva is strong, but we don't know how he would stack up against Chrollo in a 1v1 fight (they both survived their last two fights). Hisoka is also another wild card. Meruem was stronger than Netero, so then he would've been #1, and while his Royal Guards were also incredibly strong, they were weaker than Netero. Truthfully I wonder why the Royal Guard were even needed considering Meruem's might.
! Then we also have the other 11 Zodiacs, Beyond Netero, other Zoldycks (particularly Alluka), and Phantom Troupe members (although they're technically weaker than Kurapika due the latter's specialized nen).
! Also, if the world is truly more vast than what was shown in Ging revelation, there must be so many more nen users there - the Chimera ants came from there afterall. Just imagine an entire continent of Meruems.