Thread:Jekkers/@comment-25930818-20150209124956/@comment-25930818-20150209211043

The closest relevant information is probably this section, although it ain't entirely clear. The implication seems to be that the commanders are likely to be naturally powerful monsters, but any of 'em can power up through regular semen-guzzling, so it's the sluttiest ones who'll rise to the top.

No unequivocal info either way, though.