Bugbear Zombie

Brute. A melee weapon deals one extra die of its damage when the bugbear hits with it (included in the attack).

Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.

Morningstar. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 11 (2d8 + 3) piercing damage.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (2d4 + 3) piercing damage

Sudden Lunge. If an enemy moves within 10 feet of the zombie, roll a d20. If the roll is 11 or higher, the zombie moves up to 5 feet toward the enemy. If the zombie ends within 5 feet of the target, the zombie can make one melee weapon attack against it.