Mountain gnomes are weak humanoid creatures that appear on mountainous maps. If you leave food or booze out in the open, they will steal it, leaving your dwarfs dying of starvation and dehydration, but otherwise they are "harmless", will flee from your dwarves if confronted (to the point of being pushed off a cliff if necessary), and are easily killed. They can be killed by even unarmed, untrained dwarves; a drafted woodsman will make short work of even a pack of them.
The only difference between mountain gnomes and dark gnomes is that dark gnomes have the
[EVIL] tag instead of
[GOOD] and are
[NOCTURNAL] instead of
[DIURNAL]. Therefore, it makes little sense that dark gnomes are stronger than mountain gnomes.
[CREATURE:GNOME_MOUNTAIN] [NAME:mountain gnome:mountain gnomes:mountain gnome] [TILE:'g'][COLOR:0:0:1] [LARGE_ROAMING][FREQUENCY:10] [POPULATION_NUMBER:20:50] [CLUSTER_NUMBER:5:10][LOOSE_CLUSTERS] [BENIGN] [CURIOUSBEAST_GUZZLER] [GRASSTRAMPLE:0][GOOD] [PREFSTRING:ability to hold liquor] [BODY:HUMANOID:2EYES:2EARS:NOSE:2LUNGS:HEART:GUTS:ORGANS:HUMANOID_JOINTS:THROAT:NECK:SPINE:BRAIN:5FINGERS:5TOES:MOUTH] [SIZE:3] [MAXAGE:230:250] [ATTACK:MAIN:BYTYPE:GRASP:punch:punches:1:2:BLUDGEON][ATTACKFLAG_WITH] [ATTACK:SECOND:BYTYPE:MOUTH:bite:bites:1:1:GORE][ATTACKFLAG_CANLATCH] [CHILD:20] [FAT:2] [DIURNAL] [CAN_LEARN] [BIOME:MOUNTAIN] [STANDARD_FLESH] [HOMEOTHERM:10067] [LAYERING:100] [SWIMS_LEARNED][SWIM_SPEED:2500]