Alter Series

A very well developed pic drabble series which is a Fullmetal Alchemist Conqueror of Shamballa Alternate Universe Fic in which Edward Elric met up with the alter world counterpart for Roy Mustang, Masuta Ichiro, rather than Alfons Heiderich. It chronicles their journey together through Europe as they attempt to help Ed find a way home. In addition to its excellent characterization and story telling, there is plenty of Ho Yay between Ed and Masuta.

It can be found here.

Tropes used in Alter Series include:

Alternate Self: Premise of the fic.
Alternate Universe
Artificial Limbs: Masuta was shocked when he saw Ed's canon prosthetic arm.
Cool Teacher: When Hohenheim taught at Oxford, he was this to Masuta.
Death Glare: Masuta gives Ed a very venomous one after Ed badmouths Hohenheim, who was a favorite mentor of Masuta.
Doppelganger: When Masuta initially met Roy, he mistaken him for this.
Doting Parent: Hohenheim is this to Ed to make up for lost time, while he's not overtly doting he did brag about him a lot to Masuta.
Eccentric Mentor: Hohenheim was also this.
Fan Girl: Mustang and by extension Masuta have them
Freak-Out: When Masuta is waken by Roy, he has this.
Here We Go Again: Masuta presses Ed's height Berserk Button after they first meet.
Identical Stranger: Also, the premise of this fic. Edward on his search meets the real world counterpart of Hughes, Havoc, Hawkeye, Lust, Alphonse and Nina. Masuta also gets hit with this trope when he meets Izumi and Siegfried, who are his parents in his homeworld.
Irony: While Roy Mustang is a Casanova, Masuta Ichiro is a Chaste Hero/
Ironic Echo: Masuta's funeral in the real world is played in the same as Hughes's death, right down to the tears.
Loony Fan: Masuta gets kidnapped by Mustang's fanclub.
Mundane Utility: Masuta learns alchemy to recreate green tea.
Our Nudity Is Different: When Masuta ends up in the world of Fullmetal Alchemist, he is shocked by how little Winry wears. While Winry's tubetop and overalls is only showy to Edward, it's outright indecent to Masuta. In his world, not even the prostitutes wear such skimpy clothes.
Relative Error: Izumi thinks Masuta is looking at her because she's resembles a lost love, he's actually looking at her because she's his mother.
Riddle for the Ages: Thomas(Alter!Hughes) never finds out what happened to Masuta or Ed and believes him to have died.
Round Robin - Several LJ Users took part in making up certain parts of the series.
Sick Episode: When Masuta first enters the world of Central, he gets really sick. According to Ed that is just a side effect from entering a new world.
Twin Switch: Roy and Masuta switch places for Roy to goof off from paperwork.
Walking the Earth: Edward travels all over Europe looking for a way home with Masuta tagging along side him.