When asked to keep a record, choose Yes and after entering the initials and dates, you will be asked if you want to turn on the Big Head Mode. Hold Right on the pad when choosing your answer to get big feet!
When exiting the select screen in a four player game, hold Up + Extreme on all four D-Pads.
For a random team select, go to the character selection screen and press Up and the Turbo button at the same time. To get a random player, press Up and Turbo again after the random team select is done.
Hold L1 + R1 then enter the following as your names and initials: