I have some scripts from my beta mission mod.
Davis = PedCreateXYZ(99, -544.7495117+1, -30.87559319+1, 35.73596954+1)
PedSetAITree(Davis, "/Global/RusselAI", "Act/AI/AI_RUSSEL_1_B.act")
DavisBlip = AddBlipForChar(Davis, 6, 2, 2)
PedAttackPlayer(Davis, gPlayer,1)
PedShowHealthBar(Davis, true, "N_Davis", true)
bHealthBarShown = true
PedSetPedToTypeAttitude(Davis, 13, 0)
PedSetHealth(Davis, 675)