Marc Alaimo was born May 5, 1942, in Milwaukee, Wisconson. He's had several roles in Star Trek series, having played six different characters: two humans, two Cardassians, an Antican and a Romulan. He is perhaps best known for his recurring role as the twisted Gul Dukat, of Star Trek: Deep Space Nine. But he's quite a versatile actor: he's played on such television shows as Starsky & Hutch, 21 Jump Street, and even Charlie's Angels. He's very fond of the theatre, and has protrayed a character in just about every Shakespeare play there is. He was married, but is now single, and has two children, a son and a daughter. He lives in California with his dog and his wolf, Jenny.

Where you might have seen him before: played a trucker in The Naked Gun 33 1/3: The Final Insult, in a scene which was a parody of Thelma & Louise.

Sources: the imdb, and countless Star Trek fansites with little information.