Thoul

Magical monstrosities that look like hobgoblins (except on close inspection), but combine the powers of ghouls and trolls. Sometimes live among hobgoblins.

AC6 [13], HD3** (13hp),
Att 2 × claw (1d3 + paralysis) or 1 × weapon (1d6 or by weapon), THACO 17 [+2],
MV 120’ (40’), SV D12 W13 P14 B15 S16 (3),
ML 10, AL Chaotic, XP 65, NA 1d6 (1d10), TT C

• Paralysis: Successful attacks cause paralysis for 2d4 turns (save versus paralysis negates). Elves and creatures larger than ogres are unaffected. After paralysing a target, thouls will attack others.
• Regeneration: A damaged thoul gains 1 hit point at the start of each round, as long as it is alive.

Source: Classic Fantasy