Thoul
From Ardrana
Thouls are magical crosses between ghouls, hobgoblins, and trolls. In spite of their ghoulish blood, they are living creatures, not undead.
Most thouls look just like hobgoblins: about 6½ feet tall, dark-skinned, and untidy. Some, however, show clear signs of their troll ancestry. Such thouls can have any of the following characteristics: relatively hairless skin with a greenish cast; slate gray or dull black hair, ropy in texture; long and tube-like noses like a troll's. Like hobgoblins, thouls have yellow teeth. Their eyes are yellow like some hobgoblins or pure white and lack any pupil; this and their somewhat vacant look are traits that point to their troll and ghoul ancestry. Thouls can paralyze victims just as ghouls can, and can regenerate like trolls do.
Thouls have a brutal, militaristic outlook, just as hobgoblins do. Independent thouls live in small family groups in caves or ruins. Thouls often serve as bodyguards to hobgoblin kings and chieftains. Thoul spellcasters exist, but are rare.
Note: Thouls originally appeared in this form in the Mystara Monstrous Compendium Appendix for the AD&D game from TSR. Their use here is for the purposes of providing context for the campaign only.