In the beginning alongside the phoenix, in a room next to the white hot room, is the dark pressure room, and inside is an egg, which gave rise to the dragon force, the brother of the phoenix, the dragon force embodys.
Matter
Gravity
Physical life
Endurance
Stability
Structure
Preservation
While the Phoenix embodys mental power, rebirth though destruction, dragon force embodys the physical realm, enduring and taking things slow and steady.
The dragon force is stronger then the phoenix in same ways, while weaker in others, and is far more willing to listen and hear people out, he grants his hosts many powers about the physical realm, but the most important are.
(Reality manipulation resistance)
The host embodys the spirit of form and reality, and is thus immune to reality manipulation of any form or is resistant to it, it depends on how strong the will of the host is.
(Psychic immunity)
Psychics cant read, control, mess with your head, the dragon force being a being equal to the phoenix means it cant work, but the dragon force does let it if the host gives them permission.
(Life renewal)
The dragon force makes reality's and worlds, but is tied to life as well, but it is a more stable form of the phoenix, where she burns away life that doesn't work, he is the one making sure the life that does can endure and keep going, as the phoneix can bring back life, he is the one that makes life possible on worlds.
(Whatever nearly kills you makes you stronger if you survive)
As the phoenix grants mental power, the dragon makes his host Endurance beyond God's, as the phoenix rebirths their hosts, the dragon says fuck you to whatever tried to kill them, and makes them stronger while they heal..basically a divine zenkai boost.
(Physical energy mastery)
Any physical energy, atomic, Gravity, space, chi, those sorts of things, has complete control over those.
Relationship with the phoenix force.
The Relationship is...not great, the phoenix doesn't hate him, they are siblings and do love each other, but their personalitys make things hard, he especially hates the way she treats her hosts, as he perfers mutual trust and responsibility, which causes them alot of fighting.
Potential hosts.
One he would want most.
Peter parker, if there is any mortal who embodys Endurance and willpower its him.
Iron fist
Captain America
The Thing
Black Panther
Thor
Colossus
Hulk
Luke Cage
Wolverine
Daredevil
The dragon force personality.
He is old and shows it, he takes the slow way unless he has to, and is fatherly to his hosts, trying to help them emotionally even if that's not his thing, he has seen what wild emotions have done to his sister and wants to help, though when he does get mad reality across the multiverse and even beyond starts to Fracture.