Gaius Prentus is a Bravil guard who monitors the entrance to the Shivering Isles. He is serious about his job, making sure that nothing dangerous exits the gate. Not long after the Hero arrives, he proves this when Belmyne Dreleth exits the gate and becomes insane, which lead to him being put down.
The only person who has exited the gate and been spared is S'fara, who believes she is invisible and has remained peaceful.
Once the Hero accepts Haskill's offer to enter the isles, Gaius refuses to talk to them because they have spent too much time on the other side.
After hearing about a Strange Door in Niben Bay, there will be a map marker for a landmark, due east of Bravil. The Strange Door is a three-faced statue on top of an island, with a glowing portal inside of the mouth. The plants that grow on the island represent the only Shivering Isles intrusion in all of Cyrodiil.
- While he is a member of the Bravil guard, he will not attempt to arrest a Hero with a bounty.