Sven

Sven is one of Beast Boy's little buddies, a herring that he keeps in his room. His only appearance in Teen Titans Go! has been in the comic "The Herring King," where he starred as one of the main characters.

History
A longtime pet of Beast Boy's, Sven had lived a peaceful and quiet life for some time. However, when Sven seemed to become ill, Beast Boy was worried. The Titans tried to make the fish feel better, but Robin eventually deduced that Sven wasn't biologically sick, but homesick. As an Atlantic Herring (scientifically known as clupea harengus), Sven longed to be returned to Springenstadt, his birth waters, so that he could start a family.

Set on releasing Sven back into the wild, the Titans headed out to the Norwegian town. Sven, still sick, ran into even more problems when two a group of trolls started attacking the group to kill Beast Boy. Apparently, the orcs wanted to destroy him, The Herring King, so that the truce between mankind and them would be null and void. The Titans, at first believing Sven to be true king, defended him against the monsters. Luckily for the fish, two agents from the Secret Order Of The Herring (S.O.O.T.H) were able to defeat the trolls and rescue the group, as well as ID Beastie as the true king. With Sven's importance downplayed, Inga, one of the operatives, tossed him into the waters near their secret base. He was now free.

After another insane battle with the orcs (culminating in a large splash), Sven somehow landed back in his fishbowl that somehow got stuck in Starfire's hair. At long last, Sven's dream has been fulfilled... he had gone and got himself a herring wife, and together the two had a kid: a green-skinned fish, the true, TRUE Herring King (identified by his green skin).

The Titans were then tasked with taking Sven and his new family back to the Titans Tower to protect the new king. On the way there, Sven, the other fish, and Beast Boy get royal treatment, but the other four Titans had to put up with peasantry.

Characteristics
Like most of his species, Sven is a sliver-blue fish with a relatively long body. He's covered in glistening scales and has four fins and a tale. Most of the time, he has a glum look on his face, likely do to the boringness of living in a fishbowl. However, when he finds a nice wife, Sven looks much more jovial. He even dresses in a fancy maroon robe with a red handkerchief and puffs on a tobacco pipe.

Appearances

 * "The Herring King"

Trivia

 * Near the beginning of this issue, Sven is hinted at appearing in a Teen Titans comic (No. 12), also as beast Boy's pet. He likely made a very, very minor appearance in that issue.