http://www.youtube.com/watch?v=rDK3IT29uoQWorker Ant Medium Magical Beast
Hit Dice: 3d10+6 (22 hp)
Initiative: +0
Speed: 30 ft. (6 squares), Climb 20 ft.
Armor Class: 17 (+7 natural), touch 10, flat-footed 17
Base Attack/Grapple: +3/+5
Attack: Bite +5 melee (1d8+2)
Full Attack: Bite +5 melee (1d8+2)
Space/Reach: 5 ft./5 ft.
Special Attacks: Improved Grab
Special Qualities: Dark Vision 60', Hivemind, Scent
Saves: Fort +5, Ref +3, Will +2
Abilities: Str 14, Dex 10, Con 14, Int 5, Wis 12, Cha 8
Skills: Climb +10, Hide +3, Spot +4
Feats: Diehard, Endurance
Environment: Any Warm
Organization: Work group (2-6), Scouting group (8-12 plus one Soldier)
Challenge Rating: 2
Treasure: None
Alignment: Always Neutral
Advancement: 4-6 HD (Medium)
Level Adjustment: ---
Soldier Ant Large Magical Beast
Hit Dice: 6d10+18 (51 hp)
Initiative: +4
Speed: 30 ft. (6 squares), Climb 30 ft.
Armor Class: 17 (-1 Size, +8 natural), touch 9, flat-footed 17
Base Attack/Grapple: +6/+14
Attack: Bite +9 melee (2d6+4)
Full Attack: Bite +9 melee (2d6+4)
Space/Reach: 10 ft./5 ft.
Special Attacks: Improved Grab
Special Qualities: Dark Vision 60', Hivemind, Scent
Saves: Fort +8, Ref +5, Will +3
Abilities: Str 18, Dex 10, Con 16, Int 6, Wis 12, Cha 10
Skills: Climb +12, Hide +1, Spot +5
Feats: Diehard, Endurance, Improved Initiative
Environment: Any Warm
Organization: Scouting Party (4-6), War Party (10-50)
Challenge Rating: 6
Treasure: None
Alignment: Always Neutral
Advancement: 7-12 HD (Large)
Level Adjustment: ---
Queen Ant Large Magical Beast
Hit Dice: 9d10+36 (85 hp)
Initiative: +4
Speed: 30 ft. (6 squares), Climb 20 ft.
Armor Class: 19 (-1 Size, +10 Natural), touch 9, flat-footed 19
Base Attack/Grapple: +9/+18
Attack: Bite +13 melee (2d6+5)
Full Attack: Bite +13 melee (2d6+5)
Space/Reach: 10 ft./5 ft.
Special Attacks: Pheromone Spray, Incite Frenzy, Improved Grab
Special Qualities: Dark Vision 60', Hivemind, Scent
Saves: Fort +10, Ref +6, Will +6
Abilities: Str 20, Dex 10, Con 18, Int 16, Wis 16, Cha 16
Skills: Climb +13, Hide +6, Intimidate +13, Knowledge (Local, Nature) +13, Search +13, Spot +13
Feats: Ability Focus (Pheromone Spray), Diehard, Endurance, Improved Initiative
Environment: Any Warm
Organization: Solitary plus in times of danger will include plus 10-50 Workers and 5-10 Soldiers and 10-50 mind controlled slaves
Challenge Rating: 8
Treasure: None
Alignment: Always Neutral
Advancement: 10-18 HD (Large)
Level Adjustment: ---
"Oh my God! They're herding us like cattle! "After eating toxic waste ants grow to giant size and become intelligent and telepathic. My god if only we had known this, bad things could have been avoided!
Improved Grab (Ex): If the Ant successfully hits with it's Bite Attack it immediately gets to make a Grapple Check as a Free Action without provoking an Attack of Opportunity. If successful it does bite damage each round.
Pheromone Spray (Ex): At will the Queen Ant can unleash a burst of pheromone gas in an area radiating 10' from herself. Anything breathing this gas must make a DC 20 Willpower Save or become part of the ant Hivemind (Save DC is Constitution based). They can communicate with the ants and willingly obey orders as though under a Dominate spell. This lasts one week, and as long as it is reapplied before wearing off the victim doesn't get another Save. If it wears off the victim gets a Save like normal when it is reapplied. If however the Queen is injured and uses her Incite Frenzy ability all victims of this ability get another Willpower Save with a +6 Bonus. They also get another Save (along with the Bonus) if attacked by Ants (or without the Bonus if they get reduced to half HP or less).
Incite Frenzy (Ex): Whenever the Queen is injured she can put out a telepathic call for help as a Standard Action. All Ants within 1 mile will make their way towards her, killing everything in their path to do so, even their mind controlled human pets. The Frenzy lasts until 1d6 rounds after they have reached the Queen and killed whatever has caused her pain. While in a state of Frenzy Ants get a +2 Bonus on Attack and Damage rolls.
Hivemind (Ex): All Ants within 25 miles of their Queen are in constant telepathic contact, and if one is aware of a danger they all are. No Ant is considered Flanked or Flat-Footed unless they all are.
Skills: Ants get a +8 Racial Bonus to Climb Checks and may always Take 10 on a Climb Check.
Combat: Ants seem pretty straightforward in their attacks, but they try to herd intruders towards their Queen so she can gas them and make them part of the collective.
Writers notes: I know they're mutants due to toxic waste, but Magical Beast seemed the best fit Type wise