How should Tonberries be implemented?

Green? check
Glowing yellow eyes? check
Knife? check
Lantern? check
Raincoat? check

Yep its a tonberrie.

Thought the sound effect was "doink"

Everytime someone cheats at Caravan Escort the Tonberry will build up hate.
Then wait for them just as they open up a Primal Chest and execute Grudge Attack on them.