The Mongoose is a yo-yo that was marketed by Playmaxx and was the company's answer to the Henrys Viper. The Mongoose was a small yo-yo hub that utilized Brake Pads and it just happens to be compatible with the Viper's removable rubber shells. This was not advertised, and for a good reason, too. The Mongoose came with no shells of its own (save for a pair of rubber rings attached to the rims) and without shells, the Mongoose was basically non-functional. Playmaxx believed that the reverse starburst response system of Henrys' Coral Snake yo-yo infringed upon their own patent, and the fact that the addition of reverse starbursts was a home-brewed modification routinely done by Viper owners.