Jopling, Dmitri's loyal retainer and leather-clad assassin. Especially in the sequence where he stalks Kovacs in the museum. He's quite the Implacable Man.
How about the introduction to what lows he's capable of by defenestrating Deputy Kovacs' cat?
Later, when Henckels is all but confirming he knows Jopling murdered Kovacs, we get a brief flash of the crime report complete with a picture of Kovacs, dead and in the sarcophagus. It's very chilling to see.
Jopling decapitated Serge X.'s sister and put her head in a basket for the military police to find, eyes and mouth open (picture).
The final train scene near the end is particularly chilling. Gustave and Zero (along with Agatha) are stopped by a death squad, who clearly wish to murder Zero on the spot. In contrast to the rest of the film, it is the only scene shot in black and white, which provides a stark contrast to the light-hearted, almost fantastical atmosphere that had prevailed thus far.
