the short old man guss
he was preety grumpy and short tempered in the movie
is he really like that in real life or he is only acting?
It's called "acting". It's a made up "character" in a "story". Question for you...What is it like to be really, really dumb?
shareGus is played by Mickey Rooney, a very famous singer/dancer/actor who has had a Hollywood career since 1926. Look him up: http://www.imdb.com/name/nm0001682/
From what I've seen him in and heard he seems like a lovely guy so I find it hard to believe he's like Gus in real life.
"He murders his wife every night. Other than that, I think he's pretty harmless."