Ensign Kelly was an officer aboard Deep Space 9, serving under Commander Benjamin Sisko.
In 2370, Kelly's daughter and a Bajoran girl worked together on a prize-winning science fair project. Kelly was among the Starfleet officers who decided to stay on DS9 following the temporary dissolution of the Bajoran Provisional Government. In Commander Sisko's plan to resist the Bajoran Militia take-over, Kelly was placed in Dr. Bashir's unit. (DS9: "The Siege")
Kelly was in the Replimat when Elim Garak and Bashir discussed the outcome of the case regarding Rugal's return to Cardassia. (DS9: "Cardassians")
In 2373, he participated in an auction at Quark's. (DS9: "In the Cards")
He attended Ezri Dax's promotion to lieutenant jg in the wardroom in 2375. (DS9: "Afterimage")
Ensign Kelly was portrayed by regular background actor Charlie-Olisa Kaine who received no credit for his appearances.
He was first identified by name in "The Siege".
(This list is currently incomplete.)