Carbon Costume 
Riza Hawkeye from Fullmetal Alchemist
Riza (voiced in Japanese by Michiko Neya [2003] and Fumiko Orikasa [2009], and in English by Colleen Clinkenbeard [Funimation Dub] and Muriel Hofmann [Animax Dub]) is a major character in the Fullmetal Alchemist series.
She is Roy Mustang’s closest confidant and personal bodyguard, as well as the military’s best sharpshooter specialist, in addition to her rank as Lieutenant. She also has a pet dog named Black Hayate that she acquired after he was brought in by Fuery, being the only one suitable in the crew for taking care of him.
Riza has long, golden hair, usually worn up in the back with a flat brown clip, and her eyes are a deep chocolatey brown. She also wears silver stud earrings. The main outfit we see her in is a rank-specific Amestrian military uniform, all in that shade of medium blue, with silver detailing everywhere. She also wears black, shin-high boots, and is generally seen carrying some sort of firearm (she has a few, up to you which one would work best for your cosplay purposes, please keep in mind that cons generally have peace-bonding restrictions on prop guns!).
Olivier Mira Armstrong from Fullmetal Alchemist: Brotherhood
Olivier (voiced in Japanese by Yōko Sōmi and in English by Stephanie Young) is an important character in the later half of the Fullmetal Alchemist series, only seen in the manga and Brotherhood.
Like her younger brother Alex, she is part of the army that the majority of the rest of the cast report under, and is a high ranking Major General, stationed at Fort Briggs of Amestris. While known for her steady and unrelenting leadership, leading to her having the nickname of ‘Ice Queen’, she also cares very deeply for her subordinates, giving them unexpectedly leeway while still maintaining a front of control.
Olivier has the same light golden hair as the rest of her family, worn long and down over one eye, with her other visible one a very pretty blue. Her lips are also very full and glossy. The uniform she wears is a slightly different version to the regular Amestris army one that we see, as she’s stationed in a much colder place. The base uniform is still the same, in those specific shade of blues and silvers, but she wears a thick black coat with a white fur trim over top, with white gloves, and shin-high black boots. Her weapon of choice is a sword that she keeps on her person.
Envy from Fullmetal Alchemist
Envy (voiced in Japanese by Mayumi Yamaguchi [2003] and Minami Takayama [2009], and in English by Wendy Powell) is one of the major antagonists in the Fullmetal Alchemist series.
He (dependent on form) is one of the sin-named Homunculi in the series, is usually seen as a trio with Lust and Gluttony, and takes a large amount of delight in tormenting Ed. Envy is a shape-shifter and is able to take on the appearance of any character, down to vocal mimicry, even if the person exists or not. Envy’s other two main (true) forms are akin to a large green dragon and a small green leech-like creature.
Depending on the series (03 vs Brotherhood) Envy has prominently green hair or green-tinted black hair (I went with a dark green to hit the middle), and purple eyes. His outfit consists of a cropped, sleeveless black top, black shorts with a skirt-like piece over top of it, black sleeveless gloves and matching black spats. Finish off the look with the Ouroboros tattoo on your leg, the homunculi markings are already on the back of the shirt piece so you won’t have to worry about that.
Sheshka from Fullmetal Alchemist
Sheska (voiced in Japanese [2003] by Naomi Wakabayashi/[2009] by Chika Fujimura and in English by Gwendolyn Lau) is a secondary character in the anime/manga series Fullmetal Alchemist.
She used to work for the National Central Library, before being fired for reading instead of working. The Elric brothers then went to her for research help, where it was revealed that she has a photographic memory and was able to recreate any book she had read prior.
Sheska has short, messy mouse brown hair, with dark greyish black eyes that she wears half frame round grey glasses over. She wears an eggplant purple turtleneck sweater with blue jeans, with white socks.
Marta/Martel from Fullmetal Alchemist
Marta/Martel (voiced in Japanese [2003] by Rumi Kasahara/[2009] by Takako Honda and in English by Tiffany Grant) is a side character in the anime/manga series Fullmetal Alchemist.
She is part of the homunculus Greed’s group of chimera human hybrids, with hers being specifically a snake, which lets her be extremely flexible, past the point of contortion.
Marta has short, slicked back blonde hair and hazel eyes. She wears a black tank top with a knife holster attached to it, belted loose blue pants, and black boots with brown spats over them. Depending on the version, her tattoo is either green or purple.
