some differences from the manga / Brotherhood

[imperfect]

Not a complete rundown!

• Obviously, changes in backstory - both recent (i.e. Germany) and not so recent.
• Somewhat more subdued in everyday interactions until he's given a reason to get fired up, and prone to melancholy. Even when not actively angsting, he's generally more walled-off.
• Considerably taller than he used to be! ...but still leaning towards the short end of average for his age, and unlikely to grow significantly more. He has no excuse for this besides heavy automail, bad luck and aversion to milk. In particular, he's never going to be taller than Winry...
• Never permanently regained either of his missing limbs. As of the end of the movie, both are (ordinary, steel) automail, but the design is a little different to anything he used to have.
• Sense of aesthetics is not especially macabre. From time to time it veers into goofy, though.
• Not a technical pacifist, although he used to try.
• Small but significant differences in his style of alchemy.
  • The energy for his transmutations is drawn from the souls of dead people passing through the Gate.
  • When he does use them, arrays and transmutation circles frequently look identical or similar, but the more complicated ones often incorporate long, flowing curves and shapes as well as the usual symbols and geometrical patterns.
  • A Philosopher's Stone isn't the same thing in his world, and the people who go into making one (or less refined variants, like a red stone) really are dead. As such, he probably isn't able to cast from lifespan.
  • Sometimes a transmutation might be physically taxing independent of rebound.
  • Remote alchemy might be possible...
• Mild proclivities picked up in the last couple of years: rambling context-free anecdotes, alcohol.
• Appearance-wise: pointier facial structure, shorter ahoge - but most people, even those who know him well, wouldn't consciously notice the difference unless he was standing next to himself. Tends to wear brown instead of red or black these days.