Access the computer in the Batcave and enter the following passwords in the "Enter Code" menu.

Password	Effect
ZAQ637	Alfred
KNTT4B	Bat-Tank
JKR331	Batgirl
LEA664	Bruce Wayne's Private Jet
M1AAWW	Catwoman (Classic)
HPL826	Catwoman's Motorcycle
HJK327	Clown Goon
HGY748	Fishmonger
XVK541	Freeze Girl
DUS483	Garbage Truck
GCH328	Goon Helicopter
CHP735	Harbor Helicopter
RDT637	Harley Quinn's Hammer Truck
UTF782	Joker Goon
YUN924	Joker Henchman
JCA283	Mad Hatter
HS000W	Mad Hatter's Glider
M4DM4N	Mad Hatter's Steamboat
NYU942	Man-Bat
MKL382	Military Policeman
ICYICE	Mr. Freeze's Iceberg
BCT229	Mr. Freeze's Kart
NKA238	Penguin Goon
BTN248	Penguin Goon Submarine
BJH782	Penguin Henchman
KJP748	Penguin Minion
GTB899	Poison Ivy Goon
LJP234	Police Bike
PLC999	Police Boat
KJL832	Police Car
CWR732	Police Helicopter
HKG984	Police Marksman
JRY983	Police Officer
VJD328	Police Watercraft
CRY928	Riddler Goon
XEU824	Riddler Henchman
HAHAHA	Riddler's Jet
TTF453	Robin's Submarine
HTF114	S.W.A.T.
NAV592	Sailor
JFL786	Scientist
PLB946	Security Guard
LEHH02	The Flash
JUK657	The Joker's Van
EFE933	Two-Face's Armored Truck
DWR243	Zoo Sweeper