Maha Zoldyck

Maha Zoldyck is the oldest assassin in the Zoldyck family and is Zeno's father.

Background
Almost nothing is known about him. Maha first appeared once in chapter 100 of the manga (and episode 62 of the 1999 anime) along with Kalluto and Illumi on their mission to assassinate the Ten Mafia Dons. He was later mentioned again in chapter 264 by Zeno as having once fought Netero. His body seems to have deteriorated considerably due to his old age. At 140 centimeters (about 4 ft 7 in), he is even shorter than Kalluto.

According to the 2004 databook, Maha is Zeno's father. But in chapter 264 of the series, it seems as though Togashi may have retconned him as Zeno's grandfather.

Nen Abilities
Maha is the only Enhancer in the Zoldyck family. It is unknown how powerful he is or was, but according to Zeno, Chairman Netero, once the strongest fighter in the world, was the only person who had ever survived battling with him.