There are no passcodes on Super Villain island.
In the Bonus Quest, there is a security override code that you assemble letter-by-letter within the dreams of the sleeping Zeus.
Get the stopwatch to freeze time
It is the "You Know the Drill Eatery" on the middle level of the oil platform. (green door)
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You can get to super villain door in batman arkham origins online the door before it is announced and are waiting or else you will either get booby trapped or ambushed.
The robot owl keeps you from standing next to the door to freeze it open. Jump left, then right to reach the door and freeze it before he can grab you.
You need the stopwatch, which is in Captain Crawfish's dream. (The red key over the door opens the locked chest on the lower deck.) -- When the door is open the widest, click the Stopwatch to freeze it in place. You have to wait for the watch to recharge between uses.
In the Binary Bard's dream, Merlin the Owl is preventing you from freezing the door open when you need to. Run past him to the left, then back to the right just as the door opens, and you can freeze it open before he can stop you.
in super power island
You need the stopwatch from Captain Crawfish's dream. It lets you stop the swinging doors when they are open the widest. It also stops the spinning spike plants (temporarily) so you can jump onto their flat sides.
When you fly into the storm on the helicopter, you have to jump into the sea. Avoid the clouds so that you can get down quickly, and dodge the lightning bolts that can set your parachute on fire. When you reach the island, you have to climb the rocks all the way to the right side before you can climb up to the door.
The time-freezing device, the Stopwatch, is in Captain Crawfish's dream. Take the red key from above the door and open the chest on the lower deck. You can use it to get through the doors in Binary Bard's dream.
Get the Turpentine from the chest at the upper right in Captain Crawfish's dream. You will need the green key from the lower deck. The red key over the door opens the chest below the green key (has the stopwatch).