Slaad King
Ok on to the Slaad King He is tough. I aimed for CR 22 in creating him, and I hope I am there.
He is an advanced Black Slaad (he looks like the others apparently) so we start with that. I gave him levels of fighter. He is wielding a spiked chain already so this seemed to be a good choice. I REALLY considered doing him as a hexblade, and you may see 2 versions of him.
Slaad King, Male Black Slaad Ftr 7: CR 22; Medium Outsider (Chaotic, Extraplanar); HD 18d8+7d10+176+22; hp 317; Int +6, Speed 20 feet; AC 45 (+3 Dex, +14 natural, +5 deflection, +13 Armor), touch 18, flat-footed 39; Base Attack/Grapple +25/+36; Full Attack 2 claws +36 melee (3d8+11 plus stun) and bite +34 (2d12+5), or +41/+36/+31/+26 melee (2d6+2d6 negative energy damage+11, all is vile damage); SA Pounce, stun, spell-like abilities,
summon slaad; SQ Feign Death, Change shape, damage reduction 15/lawful, darkvision 60 ft., fast healing 10, immunity to sonics, resistance to acid 5, cold 5, electricity 5, and fire 5, telepathy 100 ft.; AL CE; SV Fort+29, Ref+24, Will+22; Str 32, Dex 23, Con 27, Int 18, Wis 18, Cha 18.
Skills and Feats Climb +38, Concentration +21, Escape Artist +27, Hide +27, Intimidate +32, Jump +38, Knowledge (any two) +25, Listen +25, Move Silently +27, Search +25 Spot +25, Use Rope +13; Cleave, Combat Brute [Tactical], Combat Reflexes, Diehard, Endurance, Exotic Weapon Proficiency (Spiked Chain), Great Cleave, Improved Disarm, Improved Sunder, Improved Toughness, Improved Trip, Multiattack, Power attack
Possessions: Cloak of resistance +5, +5 Keen Negative Energy Burst Adamantine Spiked Chain, Belt of Giant Strength +6, Ring of Protection +5, Amulet of Health +6, +5 Suit of Heavy Fortification Mithril Full Plate.
Feign death is from the Mud Slaad (I figure the King learned it long long ago) and it will make him a great returning villain. Quick and dirty feign death. If an opponent strikes the slaad king and reduces it to 30 or fewer hit points, it can immediately attempt to feign death. This ability comes into use on the opponent’s turn (swift action?). Any creature that witnesses the slaad king while he is feigning death, including those creatures that want it fall can make a sense motive check (DC 35) to determine if the slaad king’s death is guenuine. A Spot check doesn’t give any information. Even a heal check or a search check requires a DC 35 to work (and they have to be looking just to check if he is alive or not.) The save DC is charisma based.
Hopefully the DR 15/Law will save him from the archer. He is a beast, and he can do some cool things. He will have to be played smart, but even if he falls, just have him feign death (that is also what the diehard feat is for)