I've seen tons of fans refer to her as "Rose Thomas," but I'm positive her last name wasn't stated in the series.

O.o I don't recall ever reading or hearing that... where did you read that?

It's in the manga.

REally? Where¿?

I just read chapters one and two last night, and I don't recall a last name being mentioned.

I've read them 5 times too and I don't recall it there either, that's why I asked.

OHHH! Now I remember! It was in the GBA game.

Hmmm. I suppose it's non-canon then.

GBA game? I have two games for GBA and Roze doesn't appear :s... I haven't passed all the games so she may appear later on though, where do they say it?

It was in the first game they released.

I'm pretty sure her full name has been listed as "Rose Thomas" in a few of those anime guide books or something, too...

wow, I never heared of this either

Roze appears in GBA game 1, but I played it at japanese, so I don't know if her surname is mencioned...

yeah, I played it too, in fact, I think I was the one that sent you the games XD, and I can't recall her surname... I don't think Arakawa gave her a surname either... she doesn't seem she's going to appear again in the manga.

She mentions it when they're first introduced.

I didn't get very far in that game, so that's one of the few things I can remember.

It was also mentioned in one of the earlier Newtype articles on FMA that introduced Liore.

no you wasn't XD because I downloaded the first GBA rom before you even know about the FMA anime XD

But in that time I didn't know katakana so I didn't get the names.

That was always her last name. Its in the FMA FanBook number 1 But truthfull that didn't stick with me....untill you mentioned it I totaly forgot she had a last name...haha

They also say her name (Full name-Rose Thomas in the American version of the Fullmetal Alchemist Anime Profile Book. I wonder why they didn't put it in the anime what-so-ever :?