Use one of the following entries with the "summon" code.

agp_characters.agp_character 
agp_characters.npc_airborneinstructor 
agp_characters.npc_airbornesoldier 
agp_characters.npc_civilian 
agp_characters.npc_doctor 
agp_characters.npc_drillinstructor 
agp_characters.npc_flight crew 
agp_characters.npc_medinstructor 
agp_characters.npc_medstudent 
agp_characters.npc_nurse 
agp_characters.npc_soldier 
agp_characters.npc_specialforces 
agp_characters.npc_student 
agp_characters.npc_towerobserver 
agp_characters.npc_towerobserverfemale 
agp_characters.npc_virtualgeorge