Because why should Heroes have all the fun?
Here are a few generic Talents that can be assigned to all sorts of monsters. They work much the same way as Hero Talents,
This is a work in progress, and your ideas and input are appreciated.
Bloodlust X - Each time the monster inflicts damage, roll 1D6. On a roll of X or higher, the monster gains +1 Attack Strength until the end of combat.
Clearsight - As per Hero Talent.
Cowardly X - Each time a friendly monster is slain, roll 1D6. On a roll of X or higher, all Cowardly monsters attempt to flee the battle.
Darkseeing - as per Hero Talent.
Demonic - Monster is immune to non-magical damage. Takes double damage from holy attacks.
Double Damage - Inflicts double damage with each successful attack.
Elemental - Monster is immune to non-magical damage. Takes double damage from its opposing element.
Fear X - Monster reduces opponent's Attack Strength by X.
Frenzy X - Each time the monster takes damage, roll 1D6. On a roll of X or higher, the monster gains +1 Attack Strength until the end of combat.
Instant Kill - If the monster rolls a double for its Attack Strength, it kills its opponent instantly.
Leader - Each other monster of the same type in the area receives a +1 bonus to its Attack Strength. This effect is not cumulative.
Multi-attack - Monster can attack more than one target each Attack Round.
Immunity - Takes no damage and is unaffected by the thing it is immune to (fire, magic, etc.).
Poisonous - Monster's attack inflicts poison damage.
Regenerate - Monster regenerates 1-3 STAMINA points at the end of each Attack Round, unless it is killed first.
Resistance - Takes half damage and is only partially affected by the thing it is resistant to (fire, magic, etc.).
Spirit - Monster is non-corporeal, immune to non-magical damage and non-silvered weapons.
Undead, Greater - Monster is immune to non-magical damage, non-silvered weapons, sleep, fear, hypnotism & illusions. Takes double damage from holy attacks & sunlight.
Undead, Lesser - Monster is immune to sleep, fear, hypnotism & illusions. Takes double damage from holy attacks & sunlight.
Unstoppable - Each time the monster's STAMINA is reduced to 0, roll 1D6. On a roll of 6, the monster's STAMINA is 1 instead.
Vulnerable - Monster takes double damage from thing it is vulnerable to (fire, magic, etc.).
Monsters could also have Special Skills assigned to them, for those creatures that are particularly good at a certain ability (e.g. Climb, Dodge, Jump, Strength, Swim). A monster only Special Skill could be Flight, where the higher its score, the more agile it is in flight.