Ithyphallic Harpocrates

The phallus was a symbol of fertility, and the god Min was often depicted as ithyphallic, that is, with an erect penis. 

Ithyphallic?

: of or relating to the phallus carried in procession in ancient festivals of Bacchus. 2. a. : having an erect penis. usually used of figures in an art representation.

Min was one of the oldest Egyptian gods, associated with the primordial force of male sexual fertility. Min was typically shown standing upright in a fully anthropomorphic form, as a wrapped, or mummified, ithyphallic man 

What is the opposite of "Ithyphallic"?

Opposite: apostrophic, atonic, impotent.

The portion of the etymology of Aμβρόσιος from which Bross comes is βροτός (Brotos) which means "mortal."