Mark XI
From Jenny Everywhere Wiki
Mark XIs, or Mark 11s, (PROSE: The Resurrection of the Wellsians) were a type of Clockwork Cherub of the Crew of the Copper-Colored Cupids.
They had short matted hair, large eyes, a stove-like firehole and grated door — much like the type seen on Mark IVs —, and somewhat triangular wings. (PROSE: Acquaintanceship-982 and the Missing Mail Mystery, etc.)
Romeo-1020 was a Mark XI, as was Sigmund-1028. (PROSE: Of Romeos and Juliets) Another Mark XI was the only one of Governor-105's guards in the Morningstar 1 Base not to be a Mark IV. (PROSE: The Resurrection of the Wellsians)