Exactly.
As Middenway pointed out in his latest Hellnotes...
After all, it had been prophesied that Hellboy would come to Pandemonium and kill Satan in his sleeping chamber, then he would go up into the city and throw down all the princes and generals. Then he would claim the Crown of the Apocalypse waiting for him on his father’s throne, take up his father’s sword, and breathe life into the Great Army of Hell. Then he would break down walls of Hell, and riding a black dragon, he would lead that army to Earth.
Hellboy has yet to take up the Crown of the Apocalypse or his father’s sword, but it seems that he will. As I said before, time on Earth does not exactly line up with time in Hell, and in Hellboy: Darkness Calls, when Igor Bromhead lay dying, he spoke of being in Hell, where he could see Hellboy seated on a dragon at the head of an army. This moment has yet to happen for Hellboy, but if previous stories set any kind of precedent, it will happen, just not in the way we would assume
Makes ya wonder...