That's Just... Wrong

That's Just... Wrong, also known as Whuppopotamus, is a gold skull found in Halo 2 and Halo 2: Anniversary. When activated, it makes the enemy AI more observant, picking up on minor details such as shadows, sounds and active camouflage.

Location
At the beginning of the level, after you power your shields for the first time, Sergeant Johnson shows up on an elevator. Wait in the room until Johnson starts berating you, telling you to get into the elevator. You MUST wait for him to say "Would it help if I said please?" This takes approximately four minutes and forty seconds. Once he says this, get in the elevator, and go up to the tram. Get on the tram, and face towards the INSIDE of the building. Press up against the glass doors towards the inside of the building. You should hold X down, and you should pick up the Skull. It's on a stack of crates, near the end of the tram ride.

Effect
AI become more observant, noticing even active camouflage, shadows, the sound of reloading or drawing a weapon and footsteps. This can give them advanced warning of the player's presence, before the player knows of them. They are also more accurate and so much less likely to kill themselves or their teammates while using explosive weaponry.

Trivia

 * Though it was referred to as Whuppopotamus in Halo 2, its actual name in the English unicode of the Xbox version of the game gave it the name That's Just... Wrong.
 * In Halo 2: Anniversary, this is corrected, and it is named That's Just... Wrong.