X Æ A-12 was announced in May 2020 as the name of the son born to Elon Musk and musician Grimes, and the announcement immediately went viral for its mix of letters, a ligature, and a number. Grimes explained the elements online, referencing the elven spelling of AI and the A-12 aircraft, while Musk described the pronunciation in interviews. Because California rules do not allow numbers or symbols in names, it was later adjusted to X Æ A-Xii, but the original version remains the one used in memes and reaction clips.