Sessen

Sessen was a male Kazon-Cardassian hybrid and the First Maje of the Kazon-Nistrim sect in the early 25th century. He was born the son of Obsidian Order agent Seska and First Maje Jal Culluh in late 2372. 

Early life
Seska was an undercover agent of the Obsidian Order, disguised as a Bajoran. After she left the Federation starship USS Voyager to join the Kazon-Nistrim, she became pregnant with Maje Culluh's child. During the Voyager-Kazon conflict of 2371-2373, Seska informed Commander Chakotay in March 2372 that she had used his DNA to impregnate herself. 

When the Kazon captured Voyager and stranded its crew on Hanon IV in late 2372, the Doctor checked the infant Sessen's health and corroborated Culluh's fatherhood. Seska died when the Talaxians aided the Voyager crew in retaking the ship, and Culluh took Sessen with him when the Kazon retreated. 

First Maje
Sessen grew up disliking the Voyager crew, and probably the Federation by extension. In 2410, Captain Harry Kim held a conference of various first majes in the Bremark system to convince the Kazon sects to join the Delta Alliance and the fight against the Vaadwaur Supremacy. Sessen strong-armed several leaders into supporting him when he turned on the USS Rhode Island and its Kazon allies. 

Sessen recognized "Ensign" Kim from his father's stories. His plan had been to take out his grudge on Voyager itself but he found that Kim's Rhode Island sufficed. During the ensuing battle, Maje Sessen was in command of the Nistrim's flagship, the Kazon carrier Maje of the Kazon-Nistrim. The Nistrim-Halik and the Kazon-Mostral sided with the Allies but were defeated. When the Maje was heavily damaged, Sessen warped out of the system but vowed the alliance had not seen the last of him.