Bandai 4 Inch Line was a sub-line of the ThunderCats toys produced by Bandai Toys based on the ThunderCats (2011) cartoon series. This was the first line of the 2011 ThunderCats toys that was made by Bandai and included various figures, vehicles and playsets as well.
All of the toys in this line came with the "ThunderLynx" feature. This exclusive feature involved an embedded magnet activation system inside the 4 inch figures. The figures could utilize this feature to unlock and activate various features in multiple toys in the line including vehicles and playsets.