Rollo is a guardsman in the Lower City of Corus in 246 HE. He has been working as a guardsman since 239 HE. He is assigned to Jane Street kennel with Otelia as his partner. Their trainee since April 1, 246 is Verene, who dies just a month later on their watch. Rollo, too, dies on Beltane of 246 HE on their watch. Both of them are killed in a fight with two Barzun sailors and three of Flash District's criminals. His burial is the day after, on May 1, 246 HE, and Lord Gershom speaks in his honour.
He only appears as a minor character in Terrier and dies in the middle of the novel.