This creature looks like a dark gold amoeba with an oversized humanoid brain floating in its center. Three long, black tentacles extend from its body, writhing constantly.
AC 50, touch 24, flat-footed 44 (+6 Dex, +26 natural, +8 insight)
Constant—detect magic, see invisibility
Str 36, Dex 22, Con 40, Int 26, Wis 26, Cha 26
The Slaad Lord of the Insane is not subject to critical hits, and having no clear front or back, cannot be flanked.
The Slaad Lord of the Insane can assume the shape of a humanoid as a standard action. In humanoid form, the slaad lord cannot use its natural weapons and does not deal negative levels. He usually assumes as a human male fighter cloaked in black plate armor wielding an iron black longsword (purportedly the legendary Black Sword: a +3 cold iron longsword that stuns any creature struck, as if by a power word stun spell, for 1d10 minutes if the victim fails a DC 24 Fortitude save).
Except for a few exceptions, Slaadi are Product Identity of Wizards of the Coast and as such do not have Pathfinder-compatible versions. In the Pathfinder Roleplaying Game Paizo has replaced Slaadi with Proteans as the cannonical Chaotic Neutral outsiders. GMs are encouraged to pick Proteans as servants and summon targets of this lord of chaos.
Organization solitary or troupe (Lord of the Insane plus 1-2 death slaadi)
Treasure triple standard
The Slaad Lord of the Insane is one of the most powerful slaad lords in existence, and no slaadi questions his authority or rulership, even the other slaad lords.
The Slaad Lord of the Insane is one of the few slaad lords that enjoys traveling the planes and often enters the Material Plane disguised as a tall, mystical warrior adorned in black plate armor. In the outer planes, he is often encountered in his amoeba form or that of a great golden slaad.
The Slaad Lord of the Insane generally covers an area about 5 feet wide and feet tall, but being similar in makeup to an ooze, can flatten his form and cover a greater area or squeeze through openings much smaller than would normally be allowed. His tentacles are 10 feet long.
The Slaad Lord of the Insane attacks using his spell-like abilities and slam attacks. His natural weapons, as well as any weapon he wields, are considered chaotic-aligned for the purpose of overcoming damage reduction. His natural weapons are considered epic weapons for the purpose of overcoming damage reduction.
Slaad Lord Of The Insane from the Tome of Horrors Complete, Copyright 2011, Necromancer Games, Inc., published and distributed by Frog God Games; Author Scott Greene, based on original material by Charles Stross.