Bumblebear

Keen Smell. The bumblebear has advantage on Wisdom (Perception) checks that rely on smell.

Flyby. The bumblebear doesn't provoke opportunity attacks when it flies out of an enemy's reach.

Hivemind. If a bumblebear is attacked, nearby bumblebears within 120 feet become aware of the threat.

Multiattack. The bumblebear makes two attacks: one with its bite and one with its claws.

Bite. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 5) piercing damage.

Claws. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

Stinger (Recharge 5-6).Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 18 (2d10 + 2) piercing damage, and the target must make a DC 14 Constitution saving throw, taking 21 (6d6) poison damage on a failed save, or half as much damage on a successful one.

Pollen Cloud (Recharge 4-6). The bumblebear releases a cloud of mesmerizing pollen in a 20-foot radius. Creatures within the area must make a DC 14 Wisdom saving throw or be charmed for 1 minute. A charmed creature can repeat the saving throw at the end of each of its turns, ending the effect on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the pollen of all bumblebears for the next 24 hours.