User blog comment:CrossLeingod/Something I noticed about the latest DBS episode (very minor spoiler)/@comment-30123890-20170814060927/@comment-5610300-20170814233844

Could be taught, but that'd also apply to vegito who's half Goku and half Vegeta.

Fun Fact: Xenoverse 2 has ssj4 Gogeta, Vegito, and a range of z fighters with a kaioken voice line and move.