Grune.
Grune is fictional Character from Thundercats 2011. He was once a member of the thundercats, but he betray them and Thundera and serve Mumm-Ra.
He carried a mace-like club.
In Cosmatic Crime Begins, He made cameo along with Marluxia, Discord, Volcana, Prince Hydron, Ultra-Humanite and Baltor.