A lot of people have a difficult time understanding the differences between these three fictional species, and this ignorance has led to fear and hate (towards one species in particular). Excluding cultural and team affiliations, I've created a list of things they share and things that differentiate them so some people can understand them better as species.
Add whatever you'd like to contribute. If you want to add anything about deviants and Atlanteans (Homo mermanus), please do.
Similarities:
- All come from the same ancestor
- Are all species (homo immortalis, homo superior, inhomo supremis)
- All are from Earth, not extraterrestrial, but are spacefaring (not including universal inhumans and Titanian eternals)
- Ultimate Comics mutants, inhumans, and eternals were all "created"
- Have created isolated communities away from humanity in some way during their history
- Congregate amongst themselves usually
- Some sort of superhuman abilities
Differences:
- Raison d'être
- Eternals are immortal
- A set number of eternals were made
- Inhumans are duplicates of alien species, and therefore have the appearance of an existing or extinct species in the galaxy
- Mutants have developed their superhuman abilities overtime, the other two species were "manufactured"
- (Ultimate comics mutants were made, like inhumans and eternals)
- Inhumans have to activate their inhuman gene with a specific catalyst
- Mutants' mutation catalysts are inside them
- Eternals have a human appearance, mutants and inhumans may or may not