This is the picture of Ukobach from Dictionnaire Infernal.
I kind of prefer this look, created by monkeynohito over on Deviant Art. Actually a mix of a kobold & Ukobach, but I still like the look.
Small fiend (devil), lawful evil
Armor Class 13 (natural armor)
Hit Points 32 (5d6+15)
Speed 30 ft.
Str Dex Con Int Wis Cha
11 (+0) 15 (+2) 16 (+3) 11 (+0) 13 (+1) 8 (-1)
Tool Proficiencies Cook’s utensils
Damage Resistances cold; bludgeoning, piercing and slashing from nonmagical weapons that aren’t silvered
Damage Immunities fire, poison
Condition Immunities poisoned
Senses Darkvision 120 ft., passive Perception 11
Languages Infernal, telepathy 120 ft.
Devil’s Sight Magical darkness doesn’t impede the devil’s darkvision.
Magic Resistance The devil has advantage on saving throws against spells and other magical effects.
Coal pan. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4+2) bludgeoning damage plus 7 (2d6) fire damage.
Hurl Flame. Ranged Spell Attack: +4 to hit, range 150 ft., one target. Hit: 7 (2d6) fire damage. If the target is a flammable object that isn’t being worn or carried, it also catches fire.
These diminutive, red-skinned creatures are one of the lesser kinds of devils that reside in the Nine Hells. According to legend, the Ukobach are charged with tending the boilers of Hell, using oil made with the blood of the damned. They have spindly limbs, a slightly hunched posture, and almost comically large eyes, nose and ears. The only clothing they wear is an apron made from various sorts of leather, and they always carry a long-handled coal pan that constantly burns with hellfire. The Ukobach are able to deftly use these pans as weapons, heedless of the collateral damage the hellfire may cause. This hellfire is a product of the Ukobach’s magic, not the coal pan itself.
Pyromaniacs. The Ukobach love setting things on fire. The bigger the flame, the more they like it. They also aren’t overly picky about what they set aflame, taking a sadistic glee throwing their hellfire at random creatures. Fortunately, as they are only rarely summoned from their infernal home, they do not often have opportunities to indulge in this particular pastime.
Superlative Chefs. Ukobach love to cook and they can be quite skilled at it. Of course, what an Ukobach considers acceptable to cook can be quite different from what a mortal may find appropriate. It is possible to appease an Ukobach with an interesting recipe that it hasn’t seen before, and it is less likely to resent summoning if it has the opportunity to indulge in this pastime. The denizens of Hell typically don’t need to eat, so the Ukobach rarely have an appreciative audience to showcase their skills to. On some worlds, legend has it that it was an Ukobach who invented the art of deep frying foods.