""Sheila," I says,"you change that vid channel one more time and I'm out of here, you got it?" Well, she did, I did, and here I am."
- – Obnoxious Man, 2260.
Flinn was a human and a resident of Babylon 5.
In early 2260, he was in the waiting lobby just before a bomb explodes in the docking bay. There, he annoyed Lennier with a story about how his wife, Sheila, pushed him into leaving home. In an effort to get the man to leave him alone, Lennier lied about how he was dying of "Netter's Syndrome", a disease that is passed by physical contact. Worried about his proximity to Lennier, Flinn got up and left, claiming he had to "make a call".
Flinn was also present for the farewell address by John Sheridan and Delenn in the Zocalo before the duo departed the station for the last time, en route to the new Interstellar Alliance headquarters in Tuzanor, Minbar.