Half man, half bat. These weak creatures are commonly found within the chasm. As a properly-armed dwarf can easily take them down with sufficient armor/weapons, they provide good military training. However, an unarmed no-military skilled dwarf can also take one down easily without weapons or armor. Caution is still advised when dealing them in a group at once and near or in the chasm itself as there are more dangerous creatures than Batmen that dwell in them.
Since they can fly, it is often enough to merely stun them while they are floating over the chasm, as this will cause them to fall into it and instantly die.
[CREATURE:BATMAN] [NAME:batman:batmen:batman] [TILE:'b'][COLOR:0:0:1] [LARGE_CHASM] [PATTERNFLIER][FLIER] [GENPOWER:4] [BUTCHERABLE_NONSTANDARD] [INTELLIGENT] [CANOPENDOORS] [PREFSTRING:mystery] [BODY:HUMANOID_FLIER:2EYES:2EARS:NOSE:2LUNGS:HEART:GUTS:ORGANS:HUMANOID_JOINTS:THROAT:NECK:SPINE:BRAIN:4FINGERS:4TOES:MOUTH] [SIZE:4] [MAXAGE:10:20] [ATTACK:MAIN:BYTYPE:GRASP:punch:punches:1:2:BLUDGEON][ATTACKFLAG_WITH] [ATTACK:SECOND:BYTYPE:MOUTH:bite:bites:1:2:GORE][ATTACKFLAG_CANLATCH] [RIVERATTACK:1:1:1:3:1:5][RIVERATTACK_CANUSEWELL][RIVERATTACK_GROUP:3:7][RIVERATTACK_MOUNTS] [EQUIPS] [FAT:1] [ALL_ACTIVE] [STANDARD_FLESH] [HOMEOTHERM:10067] [LAYERING:100]