The PhatYo line was made and sold in Australia, and manufactured by Abbe toys, makers of the Black Mamba yo-yos. Imported briefly to the US, the sale of these was stopped because they violated several US patents, and one trademark.
The Trick Assassin was one of the top of the line PhatYos, with some unique and interesting features. Response cookies, sort of rubberized recessed response sticker with teeth on it. 120 different response settings were possible. A Concave axle sleeve over the bearing and a metal weight ring around the logo.