User blog comment:Jncera/"Homefront" Raves (b/c I have no Rants) SPOILER ALERT/@comment-67.70.0.140-20111001044508/@comment-3465526-20111003121211

depends on the universe -- Billy Batson says his magic word and transforms from little kid into the fully adult (appearing) Captain Marvel -- there was a hilarious sub-plot in one of the books (I think JSA) where Billy Batson at age 15 was dating Courtney (Stargirl) also 15 and everybody thought Captain Marvel was being all creepy.