When Hayley tries to help Roger interact with people at a sci-fi convention in "All About Steve", Roger finds that a human he probed is at the convention. Kurt went insane after the abduction. Roger spends the next two hours in the bathroom hiding from Kurt, both because the probing is presented with the undertone of a one night stand and because Kurt wants to show Roger to his ex-wife Eileen to prove aliens exist, which would blow Roger's cover.
One of the kids Eileen hangs onto is Dennis, a recurring background character.
Kurt is voiced by Jon Ross.