Elon's a sixth-time dad! The Tesla/Space X/Boring Company genius/billionaire welcomed the little tyke with girlfriend Grimes on Tuesday, according to Musk's Tweet.

The South African entrepreneur and the 32-year-old Canadian singer have been dating for two years; Grimes announced her pregnancy in January, saying she'd finally "capitulated" to letting someone else control her body.

As for the name -- X Æ A-12 Musk -- anyone wanna weigh in on what that means?