Clonk

Medium Humanoid (Kenku), Chaotic Neutral

STR
10 (+0)
DEX
16 (+3)
CON
10 (+0)
INT
11 (+0)
WIS
10 (+0)
CHA
10 (+0)
Ambusher.

In the first round of a combat, Clonk has advantage on attack rolls against any creature it surprised.

Mimicry.

Clonk can mimic any sounds it has heard, including voices. A creature that hears the sounds can tell they are imitations with a successful DC 14 Wisdom (Insight) check.

Actions

Hellfire Warhammer.

Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 4 (1d8) bludgeoning damage, or 5 (1d10 + 1) bludgeoning damage if used with two hands to make a melee attack.

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Clonk

Source: Baldur's Gate: Descent Into Avernus, p. 83 - Licenses and attribution