Errol Musk has branded his billionaire son a bad father and said Elon was never there for his mega brood of children. Errol, who himself is a famously terrible dad, admitted his own indiscretions but said—perhaps tongue-in-cheek—that the Tesla and SpaceX CEO will have him “shot” for going public with his opinions.

Musk's first wife, Justine Wilson, is a fantasy and sci-fi author with whom he had six children. Their first child, Nevada Alexander Musk, was born in 2002 but tragically died due to Sudden Infant Death Syndrome. The couple later had twins, Griffin and Vivian, in 2004, followed by triplets, Kai, Saxon and Damian, in 2006.