Mastermind Toys

Mastermind Toys (Japanese: 首謀おもちゃ, Shubō Omocha, Chinese: 智多星玩具, Zhìduōxīng Wánjù, Korean: 기안자 장난감, Gianja Jangnangam) is a Canadian retailing company that was founded in North Toronto, Canada in 1984 by Jonathan Levy and Andy Levy.

Involvement with Tenkai Knights
Mastermind Toys used to sell the Tenkai Knights toys. Apparently, they aren't selling the toys anymore. However, there's proof that the toys were in the stores in Canada on the Mastermind Toys site.