Fullmetal Alchemist: Brotherhood - episode 34 - 28 Nov, 2009

After learning about what type of automail is suited for such snowy weather, Olivier asks the Elric brothers about the purpose of their arrival. Deciding not to mention anything incriminating, they speak of their search for May, leading Olivier to be interested in alkahestry. They are given work to do by Major Miles, who is part Ishvalan, and they also run into Falman. Suddenly, the homunculus named Sloth appears from underground, and Olivier is surprised by his invulnerability. Edward has to hold back his answers about the homunculus, only mentioning that its makeup is similar to that of a human, which gives Olivier an idea on how to detain it. (Source: Wikipedia)