- "The Tyranids aren’t going to be impressed by how many notches you’ve carved in your sword hilt. Show me how you use it!"
- — Watch Captain Tarran Cearr
Tarran Cearr is an Astartes of the Storm Wardens Space Marine Chapter and a Watch Captain currently serving the Long Watch with the Deathwatch -- the Chamber Militant of the Ordo Xenos -- at Watch Fortress Erioch in the Jericho Reach. While he takes the mission of the Deathwatch very seriously, he has continued to further the interests of his Chapter by seeking to discover the truth behind the Nemesis Incident despite Inquisitorial sanction.
Like many of his fellow Battle-Brothers, Tarran is regarded as exceptionally brave or dangerously reckless depending on who gives the opinion. His shaved head is a canvas of tattoos in the patterns common on Sacris. Each intricate inked knot tells the story of a great battle -- to anyone who can interpret the symbols of his native tribe. Cearr is an outgoing man whose brand of camaraderie involves a scathing wit that spares no one, and he has challenged nearly every Battle-Brother on Erioch to a friendly duel at least once. The exception to his good nature is Watch Captain Servais. The two have clashed time and again on matters of strategy, philosophy, and personality. The diametric opposition of their approaches to combat has been a wedge between the two ever since the Raven Guard warrior arrived in the Jericho Reach.
While Tarran serves the mission of the Deathwatch with utmost gravity, he sees no reason not to use the assignment to further the interests of the Storm Wardens during his term of service. Despite the Inquisitorial sanction, he possesses a burning drive to discover the truth behind the Nemesis Incident. He believes that it holds the key to the return of the Storm Wardens’ original 1st Company. No one has read the Liber Tempest more than Tarran; he is always keen to volunteer himself and those under his command for any mission that might involve the Warp entities known as Enslavers and he frequently probes Ordo Xenos representatives for any information they might have on the topic.
- Deathwatch: Games Master's Kit (RPG), pp. 24-25