Thunder, Thunder, ThunderCats Hooo! Roll into battle with the 2011 ThunderCats ThunderTank from the ThunderCats animated adventure series from Warner Bros. Animation! The ThunderTank comes with a 4-inch scaled Snarf figure, designed to activate the magnetic "ThunderCats, Hooo!" sound effects. Launch the ThunderBikes with a simple push of a button. The Basic 4-inch tall figures can ride inside and unlock special ThunderTank features.