John (Another Girl, Another Planet)
From Tardis Wiki, the free Doctor Who reference
"John" was the alias of a member of a species with which Irving Braxiatel was familiar. (PROSE: Where Angels Fear) He was a chain smoker and once acted as Bernice Summerfield's informant. (PROSE: Another Girl, Another Planet)
Personality
John enjoyed acting mysterious to give Braxiatel "a taste of his own medicine". (PROSE: Where Angels Fear)