Convinced that Deep Space 9 had somehow destroyed Dukat's ship and refusing to believe Kira's story about a wormhole, Jasad opened fire on the station. Upon Dukat's return through the wormhole, he ordered Jasad to stand down. (DS9: "Emissary")
According to the script, Jasad was pronounced as "jahs-SAD". Furthermore, the script for "Emissary" describes Jasad as "arrogant" and, in one scene, "incredulous, but calm."
In the Star Trek: Myriad Universes novel, A Gutted World, the mirror Jasad and his ship visited Terok Nor for repairs in 2373, though mirror Damar had to delay them, instead focusing efforts on getting the anti-proton scan sensors online.