Should I skip FMA?
Fillers in FMA (2003) make up a huge part of the plot, so you cannot skip them at all, except for a select few. You must watch all the fillers in FMA (2003) for the story to make sense. FMA Brotherhood, on the other hand, follows the manga religiously and hence, has unimportant fillers that can be skipped. Sep 27, 2020
Can I skip Fullmetal Alchemist?
While the story does borrow some of the plot in the manga it recreates it in an original way. After a while the story doesn’t relate to the manga at all. But yes you can in fact skip FMA and watch FMAB instead.
Can I skip Fullmetal Alchemist and watch Brotherhood first?
Yes. You don’t need to watch Fullmetal Alchemist to watch Brotherhood. Fullmetal Alchemist originally followed the manga, but then branched off and ended differently. Years later, the remake was made, and this one followed the manga to the end.