Slaven

Slaven is the het ship between Slade and Raven from the Teen Titans fandom.

Canon
Raven and Slade have crossed paths with both of them being enemies towards each other, as Raven was a member of the Teen Titans, she has faced Slade and fought his robots many times. Raven was the only one who fought his apprentice Terra when she betrayed him.

They had very little interaction until the episode "Birthmark" where Slade was brought back to life by her father Trigon, who Slade was now a servant too. Slade would be after after, taunting her about her destiny and that she can't run away from it. Throughout the episodes following this event Slade and Raven would mainly communicate with each other instead of fighting, though the conversations were not friendly.

During "The End" trilogy Slade worked with the Teen Titans to save Raven as Trigon had betrayed him. Slade and Robin worked together to find Raven however they split before they find her, as Slade had something else to do. The next time we see him is helping the Teen Titans fight Trigon, after Raven defeats her father Slade is nowhere to be found.

Fanon
The ship soared when "Birthmark" aired, the following episodes that continued the story line brought more shippers in. Fans like them together as they are a bit similar to each other and think the two would make a "power couple". Fans like to think that Slade is fascinated with Raven's power and straight, as would want her to be his next apprentice. Fans also like the hip as the characters are on opposite sides and could fall in love. Fans also like to believe that after "The End" Slade would find some way to apologise to Raven for what he had done.

Because Raven had a romantic relationship with his son, Jericho, fans like to think of what Slade's reaction would be, an idea to this concept is a "family dinner" where Slade, Jericho and Raven are having dinner with each other and learning more about one another. With this trope fans like to believe that Slade would leave the Teen Titans alone and approve of Raven being with his son.

Fandom
AO3

Raven/Slade tag on Archive of Our Own

TUMBLR

Slade x Raven tag on Tumblr

Trivia

 * When Slade found out the truth about Raven he told he was very impressed.
 * When Raven fights against Slade we see his eyes widening at her final move, this could interpreted that he underestimated her power or/and he was scared of her power.
 * As Slade did not show up in any more episodes after "The End Part 3" it is likely believed that Slade decided to leave the Teen Titans alone and find a way to pay his debt to Raven, and to apologise to her for the part he played.