It appears that the show Agents of SHIELD could be headed for a collision course with the Inhumans.
Who are they? ...What are they? This post is designed to help fans understand who and what the Inhumans are and why they are going to be very important to Marvel going forward.
What are Inhumans:
Inhumans are an offshoot of humanity that develop super mutant powers when exposed to a chemical called Terrigen. Skye and Raina on Agents of SHIELD are Inhumans.
For more see:
Who are the Inhumans?
Is Skye an Inhuman?
Inhumans to replace Mutants
As Marvel does not control the film licenses to Mutants they are expected to begin making all new characters that would be mutants into Inhumans. Likewise they may find away to make all mutants in their comic world Inhuman as well. The comic series Inhuman is setting this up, and so is Agents of SHIELD. There appears to be a convergence on this subject in both the show and the comics.
For More See:
Marvel's Inhuman push in comics, TV, and film explained
Inhuman #8 why did Marvel double orders?
What is the City the Agents are going to?
The city is likely Attilan or the ruins of an older complex like the Temple of Randac.
For More See:
What is Attilan?
What is the Temple of Randac?
Hunting for the Mysterious City in Agents of SHIELD
The Inhuman's Royal Family:
Inhuman's Royal family rules Inhuman society and are also the most well known and powerful characters. You can learn more about each of the members of the royal family below:
Who is Blackbolt? Why is he so powerful?
Who is Medusa?
Who is Karnak?
Who is Crystal?
Who is Triton?
Who is Gorgon?
Who is Maximus the Mad?
All Inhuman Links as Resource:
Agents of SHIELD build up of Inhumans
Marvel's Inhuman Push explained
Inhuman #8 why did Marvel double orders?
Who are Skye's parents?
Did Agents of SHIELD jus introduce Skye's Mom?
Is Skye's Father Maximus the Mad?
Characters:
Who are the Inhumans?
Who is Blackbolt? Why is he so powerful?
Who is Medusa?
Who is Karnak?
Who is Crystal?
Who is Triton?
Who is Gorgon?
Who is Maximus the Mad?
Important Places:
What is Attilan?
What is the Temple of Randac?
Important Items
Terrigen Crystals
Ancient Inhumans
Who is King Randac?
All Alien Races and Places in Marvel:
Nova Worldmind - Cosmic Races and Cosmic Map