Taliesin is the lead role for the Thalmor's Shadow.
Once a member of the Thalmor, "Taliesin" - an Alias - is done with being an enforcer of the White-Gold Concordant and wants to sever his ties to the Altmeri Dominion. During the game's vanilla main story line in Helgan, Taliesin finds an opportunity to disappear, leaving his old name behind and starting anew. He does has some atoning to do for his job as a Thalmor Agent, but he's (reluctantly) willing with a little support from the Dragonborn.

Taliesin is a thespian at heart. Overly dramatic with quick wit and a sarcastic remark at every turn. He loves to monologue and steal the spotlight whenever possible. Despite this, however, he does has a soft spot, though finding it may need a little patience and digging to find. He loves animals and has the instincts of a protective older brother. He'll step up when one needs guidance and is willing to put himself between his friends and danger.

Taliesin is also an open pansexual and isn't shy about voicing what and whom he finds attractive without crossing any lines. Nothing explicit or inappropriate. There are plans on making him a romance option for the player, but nothing too sexual.