Tetsu is a young boy from Rush Valley in southern Amestris whose automail leg keeps him coming back to Atelier Garfiel, and above all to its apprentice Winry Rockbell, whenever the mechanical limb needs servicing.
A blue-eyed boy, Tetsu has his right leg replaced by an automail prosthetic, fitted after an accident the story never spells out. Beyond that artificial limb, he looks like any other child growing up in his southern hometown.
He has a cheerful, slightly cheeky streak, freely confessing that he would sooner have a cute girl like Winry see to his leg than Garfiel, the shop's chief engineer. Whenever she is gone, he makes no secret of wanting her back in a hurry.

Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....

There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
Tetsu makes his home in Rush Valley, down in the southern part of Amestris, where the upkeep of his automail keeps him tethered to the Atelier Garfiel workshop, more and more of that work falling to its fresh recruit, Winry Rockbell. While she spends a long stretch away in Central City, he is among the customers who phone in to hurry her back. His name, written with the kanji for iron, points to the metal leg he leans on, and he even sneaks a quick cameo into one of the Brotherhood ending sequences.
Tetsu's name is written with the kanji for iron, a nod to the automail leg he relies on after an accident. The name ties directly to the mechanical limb that defines his role in the story.
Tetsu is a young boy from Rush Valley in southern Amestris whose right leg was replaced with an automail prosthetic after an accident. He regularly visits Atelier Garfiel for repairs to the limb.
Tetsu lives in Rush Valley, in the South State of Amestris, a town known for its automail workshops. His home there keeps him close to Atelier Garfiel, where his automail leg is maintained.
Tetsu keeps returning to Atelier Garfiel because his automail leg regularly needs servicing. More and more of that upkeep falls to the shop's apprentice, Winry Rockbell.
Tetsu has a cheerful, slightly cheeky attitude toward Winry Rockbell, openly admitting he would rather have her fix his automail leg than the shop's chief engineer, Garfiel. When she is away in Central City, he is among the customers who call to hurry her back.
Looking for more on Tetsu? The Fullmetal Alchemist Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the Fullmetal Alchemist anime series, manga, and official materials. Fullmetal Alchemist was created by Hiromu Arakawa, published by Square Enix, and animated by Bones. All rights to Fullmetal Alchemist and its characters belong to their respective owners. Episode and chapter references are cited where applicable.
Rights holders
All rights belong to their respective owners.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
Official resources:
Daddy Jim Headquarters maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.