|This article is about the former Lion Force pilot as he appears in DotU-related interpretations. For a list of other meanings, see Sven (disambiguation).|
Voltron: Defender of the Universe continuity
Sven was part of the scout team, under Keith's command, sent by the Galaxy Alliance to planet Arus. He and the others had witnessed a massive bombardment by Planet Doom, and he was captured along with the others. 
Sometime later, he had rescued Lance from an attack by Haggar, and ended up seriously injured. Eventually, he was transferred to a hospital on another planet. But Doom attacked that planet, and Sven was captured and taken as a slave to Planet Doom.
He later reunited with the Voltron Force when he helped Romelle escape from Planet Doom. Sometime after his escape, he joined Romelle instead of flying Blue Lion (control of which passed to Princess Allura) or otherwise serving the Voltron Force in a reserve capacity.  
Afterward, on a few occasions he would help the Voltron Force in foiling Zarkon's attempt to fill in the power vacuum left behind with the destruction of Planet Doom and its Drule Empire, and even flew Blue Lion again during an attack on Galaxy Garrison by Lotor.
In Voltron Force, he has a son with Romelle.
Voltron: The Third Dimension
Devil's Due comics continuity
Modern Comics continuity
- Sven is actually a composite of two characters in Beast King Golion. Takashi Shirogane was the original Blue Lion pilot who was killed in episode 6, and Ryou Shirogane, Takashi's brother. Since they looked alike, WEP simply decided that Sven would survive the events of episode 6.
- Sven's pilot outfit had minor differences from the other Voltron pilots, featuring gold bands on the shoulders and boot cuffs rather than black bands.
- Sven is the only other Voltron Force character (aside from Allura) who has two standard casual outfits- a dark-blue long-sleeved shirt and dark blue pants (worn by Takashi in the original source material) and a light blue shirt and black pants (worn by Ryou in the original source material). He wore the first "Takashi" outfit from episodes 1-6 and every episode after 52 in which he appeared (except episode 60). He wore the second "Ryou" outfit in every episode in which he appeared between 41 and 52 and in episode 60
- Sven flies five sorties in Blue Lion onscreen (in episodes 3, 4, 5, 6, and 63)
- Although he rarely appears after Episode 6, he still appears during the opening sequence.