Leonard Mitchell - the Night Hawk from Tingen, later transferred to Backlund: a handsome man, a wit, and the Midnight Poet of the Darkness path - in his case, both a Sequence and a calling.
A colleague and eternal opponent of Klein in the Tingen team, Leonard combines the talent of an operative with the habit of meddling in matters that smart people steer clear of. The reason is partly that he receives advice from a voice in his head - and it is a very old voice.
Who Leonard's "grandpa" is and what he wants - one of the long-standing mysteries of the novel; let us only say that this poet's secrets are enough for a whole book.