Cleon
Legend
With the exception of the Carrion Crawler, all the samples have trample damage dice that don't match the values in the Mystaran Gargantua Modifiers Table.
The table says the trample damages should by Gargoyle 3d8+21, Troll 4d8+27, Monitor Lizard and Constrictor 3d8+22 and Viper 2d8+12, but the samples' trample damage is 1 step higher.
Either change the table and make the Gargantuan Carrion Crawler 6d8+21 or reduce the samples' trample damage.
So we still need the sample giant carp, wight, and spectre. What else?
We haven't done the Treant yet. How's this:
Mystaran Gargantua Treant
Colossal Plant
Hit Dice: 56d8+896 (1148 hp)
Initiative: –1
Speed: 60 ft. (12 squares)
Armor Class: 30 (–8 size, –1 Dex, +29 natural), touch 1, flat-footed 30
Base Attack/Grapple: +42/+79
Attack: Slam +12 melee (12d6+21/19-20 25d6+42 plus DC 59 Fort save or instant death)
Full Attack: 2 slams +12 melee (12d6+21/19-20 25d6+42 plus DC 59 Fort save or instant death)
Space/Reach: 40 ft./40 ft.
Special Attacks: Animate trees, double damage against objects, trample 8d6+31
Special Qualities: Damage reduction 10/slashing, low-light vision, plant traits, vulnerability to fire
Saves: Fort +46, Ref +23, Will +27
Abilities: Str 53, Dex 8, Con 43, Int 12, Wis 16, Cha 12
Skills: Diplomacy +26, Hide +23*, Intimidate +38, Knowledge (nature) +26, Listen +40, Sense Motive +30, Spot +40, Survival +22 (+24 aboveground)
Feats: Cleave, Devastating Critical (slam), Dire Charge, Epic Reflexes, Epic Skill Focus (Hide), Epic Skill Focus (Intimidate), Epic Skill Focus (Listen), Epic Skill Focus (Spot), Epic Will, Great Cleave, Improved Critical (slam), Improved Natural Attack (slam), Improved Sunder, Iron Will, Lightning Reflexes, Overwhelming Critical (slam), Power Attack, Track, Weapon Focus (slam)
Environment: Temperate forests
Organization: Solitary
Challenge Rating: 27
Treasure: Standard
Alignment: Usually neutral good
Advancement: 57–168 HD (Colossal)
Level Adjustment: +5
Animate Trees (Sp): A mystaran gargantua treant can animate trees within 180 feet at will, controlling up to two trees at a time. It takes 1 full round for a normal tree to uproot itself. Thereafter it moves at a speed of 10 feet and fights as a gargantua treant in all respects. Animated trees lose their ability to move if the treant that animated them is incapacitated or moves out of range. The ability is otherwise similar to liveoak (caster level 12th). Animated trees have the same vulnerability to fire that a treant has.
Double Damage against Objects (Ex): A treant or animated tree that makes a full attack against an object or structure deals double damage.
Trample (Ex): Reflex DC 59 half. The save DC is Strength-based.
Skills: *Treants have a +16 racial bonus on Hide checks made in forested areas.