A Gatekeeper (門番 Monban) or a Guard (ガード Gādo) is someone who guards the entrance of a place.
In Touhou Project, gatekeepers (sometimes referred to as guards) are fairly common and seen in many games within the series from the PC-98 era to the Windows era. Almost ever location in Gensokyo is guarded at least one person.
- Examples: Hong Meiling, Ichirin Kumoi (and Unzan), Yoshika Miyako, Kurumi(?), Elly, Sara, SinGyoku, Moon Capital Gate Guards, The Five Magic Stones(?)
- Wikipedia entry for gatekeeper