Buppy

Shapechanger. The plushie can polymorph into a beast form that towers over most competition (speed 30 ft.). It reverts to its true form upon Long Rest or if it dies.

Magic Resistance. The plushie has advantage on saving throws against spells and other magical effects.

Bonk: Melee Weapon Attack: +4 to hit, reach 10 ft., one target. Hit: 5 (4d8 + 3) bludgeoning damage.

Smash: Melee Weapon Attack: +4 to hit, reach 10 ft., multiple targets. Hit: 5 (3d8 + 3) bludgeoning damage.

Serenity. The plushie magically turns invisible until it attacks or uses an action (such as dash), or until bumped into by an unsuspecting civillian.

Get silly with it: Once per Long Rest, Buppy can enter a state of Frenzy, effectively doubling his movement speed and his damage. The Frenzy lasts for 5 rounds.