Enter these codes at the team selection screen.
African Stars:
R2, Up, Up, Right
North American Stars:
L1, Down, Down, Right
South American Stars team:
R2, Down, Down, Right
Z Axis team:
R1, Down, Down, Right
Australasia and Asia Stars team:
R1, Up, Up, Right
Oranje team:
L1, Down, Down, Right
Euro Stars team:
L2, Down, Down, Right
Azzuri team:
L2, Up, Up, Right
Team BMG:
L2, Left, Left, Right
All teams:
L2, Left, R2, R1, L2, Right. (Highlight "Europe" and press Left to access the bonus team)