Press "Up" on the D-pad twice to take out your phone and enter these cheats.

Code	Effect
359-555-0100	Spawn Annihilator
826-555-0150	Spawn Burrito
245-555-0125	Spawn Double T
227-555-0100	Spawn a FIB Buffalo
245-555-0199	Spawn Hakuchou
245-555-0150	Spawn Hexer
245-555-0100	Spawn Innovation
826-555-0100	Spawn Slamvan