See if your favorite superheroes lie in Herald tier.
Herald from Marvel Comics is used to describe a specific class of characters in the series. Heralds are often characters that work for Galactus and in Marvel are normally a group of people that scour the universe in search of appropriate worlds for Galactus to feed on. If the planet in question aids a conscious civilization, the Herald will often be compelled into battling with inhabitants who attempt to push Galactus away.
The term can also be applied to other fictional beings in a comparable class of might and ability. General Herald - level abilities include capabilities of star busting, moving at FTL to Massively FTL speeds and tanking supernovas.
Superheroes like Thor, Silver Surfer, Superman fall under high herald category.
SOURCE: Comic Vine
Some of the superheroes from this class are Thor, Blackheart, Onslaught, Beta Ray Bill and Silver Surfer (Marvel), Demitri Maximoff (Pyron absorbed), Asura (Asura's Wrath), Superman (DC Comics), Wonder Woman, Doomsday (DC Comics), Godzilla, Green Lantern (Hal Jordan) and Black Adam. All of this mightiest being falls under the class, high herald.
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Likewise, mid herald identities are capable of planet busting and multi-planet busting, moving at relativistic to lightspeed to even FTL speeds and tanking planet busters. Some of them are Krillin (Dragon Ball), Lobo (DC Comics), Hulk, Boros (One Punch Man), She-Hulk and Juggernaut(Marvel), Horus (Warhammer 40K), Spawn (Simmons) and The Darkness.
Krillin the-mid level herald.
As for the low heralds, these individuals holds the abilities of Life-Wiping and soloing modern day earth and the Power 6 (an extended version of universes entailing the world of Naruto, Hunter x Hunter, D.Gray-Man, Bleach, One Piece and Reborn) with ease, moving at massively hypersonic to relativistic speeds, and tanking anything below planetoid+ level in DC.
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The forces being Darth Nihilus, Emperor Palpatine and Luke Skywalker (Star Wars), Magnus the Red (Warhammer 40K), Dante (Devil May Cry) , Sephiroth (Final Fantasy), Cthulhu (Lovecraft), Red Hulk, Human Torch, Storm, Apocalypse, Mephisto and Abomination (Marvel), Garou and Tatsumaki (One Punch Man), Power Girl (DC Comics) and Ultraman.
One Above All; apparently responsible for the existence of all life in the Multiverse and possibly beyond.
The herald level superheroes typically lie behind Supreme Being (One above all; from Marvel comics), Living Tribunal (the Beyonder; Marvel, Lucifer Morningstar; DC comics), Multi-Eternity (Zen-Oh Sama; Dragon Ball), Ultimate Nullifier (Eternity; Marvel, Unicron; Transformers), Abstract ( Franklin Richards; Marvel, Beerus; Dragon Ball), Cube Being (Son Goku, Vegeta and Frieza; Dragon Ball, Dormammu; Marvel), Skyfather (Thanos, Odin, Broly), and Transcendent (Dr. Strange; Marvel, Cell; Dragon Ball).