Who populates the universe
Peoples & Species
Skrulls
The shapeshifters
Kree
The blue empire
Chitauri
Thanos' swarm army
Celestials
The cosmic titans
Eternals & Deviants
The immortal guardians
Asgardians
The god-people
Inhumans
The Terrigen-changed
Mutants
The children of the X-gene
Symbiotes
The hungry roommates
Flerken
Not cats
The Watchers
The eternal observers