Sergei hid behind the facade of a timid, polite, and presentable young man. He approach his duty with politeness and farce kindness, but when he doesn't get what he wants, he reveals his true colors. Beneath his false timid exterior lies a much more sadistic and cruel nature. He is short tempered and impatient, leading to his vulgar, crude, and snarky remarks. He is a pragmatist, highly logical and witty, and is very cocky of his position in the military. He is unhinged and merciless.