Bomber Goblin

Nimble Escape. The goblin can take the Disengage or Hide action as a bonus action on each of its turns.

Explosion Expert. If the goblin is subjected to an effect that allows it to make a Dexterity saving throw to take only half fire damage, the goblin instead takes no fire damage if it succeeds on the saving throw, and only half damage if it fails.

Short Sword. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage.

Fire Bomb Toss. The goblin throws a bomb that explodes at a point it can see within 50 feet of it. Each creature in a 15-foot-radius sphere centered on that point must make a DC 14 Dexterity saving throw. A creature takes 5 (2d4) fire damage on a failed save, or half as much damage on a successful one.The fire ignites any flammable objects in the area that aren't being worn or carried.

Scrap Bomb Toss (Recharge 6). The goblin throws a bomb that explodes at a point it can see within 30 feet of it. Each creature in a 10-foot-radius sphere centered on that point must make a DC 15 Dexterity saving throw. A creature takes 10 (3d6) piercing damage on a failed save, or half as much damage on a successful one.