5.6
/10
Principal O'Neil is a fictional character portrayed by Mark Atteberry in the TV series S.W.A.T..
They appear in 1 episodes out of a total of 141 aired so far

Principal O'Neil

by Mark Atteberry

character

Episodes1

  • 8.9
    /10

    School
    episode S2.E11 january 2019
    The team is forced to relive the past when they receive a manifesto planning to copycat a previous mass shooting at an area high school with a higher body count.