Latchkey (no real name known) was a member of the Masterminds and part of Nicholas DuPraeve's plot to take over Whateley Academy. He (or she) was sent to juvenile incarceration, but disappeared less than three months afterwards. He was either a Junior or a Senior when he was kicked out in the year of 2005-2006, as "[putting] Latchkey and Nightfox in Juvie, [and sending Dupraeve into flight, left] the Masterminds run by a bunch of Sophomores and Froshes!”