There are three packs that contain Obelisk the Tormentor. They are Gold Series 4: Pyramids Edition; Battle Pack: Epic Dawn; and Battle Pack 2: War of the Giants.
You can't...
There is no "red obelisk the tormentor". There is a TCG-legal version of Obelisk the Tormentor, released in Shonen Jump (see http://yugioh.wikia.com/wiki/Obelisk_the_Tormentor_%28Effect_Monster%29).
avenge
you have to cheat because you cant get it in a pack in the game
Neither versions of Obelisk the Tormentor (original and legalized effect monster) have official passcodes.
Obelisk the Tormentor is a character from Yu-Gi-Oh. There is a trading card series based on this which allow children to play to gain cards from other children and collect rare items.
The "old" Obelisk the Tormentor is not a legal Yu-Gi-Oh! card, so it is technically not banned. However the card does state on the bottom, "This card cannot be used in a Duel", which pretty much means you are not allowed to use it.
You can't that's only in japen
obelisk the tormentor slifer the sky dragon the winged dragon of ra
Obelisk the tormentor is meant to have 4000 ATK and DEF.
Obelisk the Tormentor Slifer the Sky Dragon The Winged Dragon of Ra
Ishizu Ishtar gave Kaiba Obelisk the Tormentor.