about how powerful each herald is.
This is the list from most powerful to least powerful with every herald. (Not including the Kryptonian, if he was included, he would be in between Morg w/ WOL and Destroyer)
1) Tyrant
2) Destroyer
3) Fallen One
3) Invisible Man (Big G actually stated himself that he was the most powerful herald to ever serve him.)
4) Dark Angel
5) Morg (w/ Waters of Life he is between Fallen One and Destroyer)
6) Silver Surfer/ Firelord (Galactus has even stated that they were made exactly even in terms of power)
7) Terrax
8) Air-Walker
9) Plasma
10) Ardina
11) Nova
The Red Shift's level has never been confirmed, so i didnt put him on te list since i wasnt sure. He has been stated by Galactus to be close-to Silver Surfer-level though so im guessing he's about equal to Terrax.
I know theres a few that im missing but i just cant remember right now.