Balors in D&D 5e are Huge Fiends with a Challenge Rating of 19, possessing a Strength of +14, Constitution of +12, Wisdom of +9, and Charisma of +12. They have abilities like Fire Aura, Death Throes, and multiattack capabilities with a longsword and whip. Fire Aura: Each creature within 5 feet takes 10 (3d6) fire damage at the start of the balor's turn. Death Throes: Upon death, the balor explodes, dealing 70 (20d6) fire damage to creatures within 30 feet, with a DC 20 Dexterity saving throw for half damage. Multiattack: The balor can make two attacks: one with its longsword and one with its whip. Longsword +14 21 (3d8 + 8) slashing + 13 (3d8) lightning Whip +14 15 (2d6 + 8) slashing + 10 (3d6) fire Magic Resistance: Advantage on saving throws against spells and magical effects. Teleport: Can teleport up to 120 feet to an unoccupied space it can see.
