Listen...to be blunt, we work in an industry with small people who have big egos and not enough common sense.
No one wants to hear this, but the regional airline space is filled with people who are pros...they come to work, they do a good job, they go home.
The regionals are also filled with people who are awful to work with. They think they're god's gift to dispatch but have bad passdowns on a daily basis and still don't know how to derive alternate minimums after 5 years on a desk. Sometimes a regional is filled with dispatchers who advance to line/sector supervisor-type jobs (at some places they are called "coordinators") without enough experience in dispatching. They think they're God's gift to dispatching because they got offered the chance to move into that job after 2 months or 3 months on a desk. They're often snarky, arrogant, and rude, and like a cowboy who is all hat and no cattle...no substance.
Like every job, you have personal politics at play. Some people really are just unkind...and in this business you're going to meet a lot of them who smile at your face and talk badly about you behind your back. They'll make your life hell for no reason.
Others are kind. They'll share knowledge, and they'll be great to work with.
Don't worry so much about cultivating a reputation as just coming in, doing your job, and being affable. People are going to like you or not...that's not really any of your business except as it affects your actual job.
If you spend too much time worrying about your reputation, you'll go nuts...and besides...who wants to be liked by some of these people anyway? Small people with fragile egos belong on the flight deck...not in ops.
Small people with small egos thinking they can affect your career in the long term and like to say things like, "it's a small community...don't burn bridges because you won't make it very far"...seriously...they're in the exact same place you are at right now...and are likely stuck there. Be you...do a good job...let the chips fall where they may.