At MyCorp U.S., Inc. I'm the pusher - one of the main keyboards on the org chart, the one you want to follow. Without me the corporation would be a cruel, harsh place, and would quickly collapse. I'm generous and kind, but also have a sinister side. One time I was arrested for some back-room deal, quite a serious infraction actually. Everyone was shocked!
Who am I?
Edit: added "wordplay" tag (though that is a relatively minor element in the riddle).
I am a thing, not a person.
My corporation's name might work better in Latin.