Spoiler Alert for Avengers: AOU.
Ok, now that that is out of the way. As Infinity War is coming closer and closer, Thanos is going to start collecting the six Infinity Gems as seen right above. I'll just remind you guys of the whereabouts of the known stones.
The Space Gem - The Tesseract
Abilities: The space gem allows its user to manipulate space anyway one sees fit. Its most basic powers allow one to teleport themselves and others any place they can picture in their mind, regardless of distance or preventive measures such as walls or spells. Its more powerful abilities allow one to appear in multiple places at once, like when Loki killed Coulson. Thank God for the Tahiti Program.
Current Location: At the end of Avengers, Thor took Loki and the Tesseract back to Asgard. But, at the end of [Thor: The Dark World](tag:206462), we find out that Loki is really posing as Odin. So, its either in some locked up Asgardian Vault that Loki doesn't know about or in Loki's possession.
The Reality Gem - The Aether
Abilities: The Reality Gem allows its user to alter reality to what one wants or break the laws of reality and logic such as making 2 + 2 = 5. It can be used to resurrect the dead, distort reality around someone so it is incomprehensible, or other things that would normally be impossible. More powerful uses allow one to create any type of alternate reality one wishes.
Current Location: In the After Credits Scene in Thor: The Dark World, it is given to The Collector for safe keeping, but in Guardians of the Galaxy, The Collector's shop is blown up, so The Collector may still have it or it may be in a random place.
The Power Gem - The Power Orb
Abilities: The Power Gem gives the owner access to all power and energy that ever has or will exist, and can back the other gems and boost their effects. Its most basic powers grant its user unlimited stamina and can increase the user's strength to unlimited levels depending on how much the gem is drawn upon. It allows the user to duplicate practically any physical superhuman ability and become invincible.
Current Location: This one is simple, The Nova Corps in Zandar
The Mind Gem - Loki's Scepter
You are probably wondering, if the Mind Gem is in Loki's Scepter, then why is the Vision the picture? Well, in [The Avengers: Age Of Ultron](tag:293035), the Gem comes out of Loki's Scepter and is placed in Vision's forehead.
Abilities: The Mind Gem gives the owner psionic powers like telepathy and telekinesis or can augment the pre-existing mental powers of its user. When used in conjunction with the other gems, it can link its user with all other minds in the universe at once.
Current Location: Vision's forehead.
So Where Are The Other Two Infinity Gems?
At the moment, that is unknown, but we may have a clue.
This may or may not be true, but so far the four known gems have each started with a letter from Thanos' name. So it may give us a clue to where the Soul and Time Gems are.
Time Gem: If the Time Gem is H, I think it will be a powder or sand in an hourglass. It fits the idea of time, it starts with H and it looks similar to the containers for the Tesseract and Aether. It can be introduced in Doctor Strange because Dr. Strange has some time manipulation powers. It can also show up in Thor: Ragnorak. It can be used to revert the downfall of Asgard.
Soul Gem: If the Soul Gem is N, I think it will be the jewel of a necklace. To be more specific, a necklace that either Adam Warlock or Doctor Strange wears. It can be in either Guardians of the Galaxy 2 or Doctor Strange.
Infinity War Villains: So far, one villain has had their demise because of a Gem. I believe that once Thanos has all six gems, he will release the six villains once again and have a mini army. Red Skull was teleported by the Tesseract, Malaketh died while fused to The Aether, The Power Orb killed Ronan, and The Vision finishes Ultron off with the Mind Gem.