===Obelisk the Tormentor===
Obelisk the Tormentor is the first of the cards to appear in the anime. Obelisk is the only card Marik could not acquire, and his sister Ishizu gives the card to [[Seto Kaiba]] in the hopes he will use the card in his upcoming tournament and lure Marik out of hiding to claim it during the preliminaries, but loses to [[Yugi Mutou]] in the semi-finals and thus hands the card to him. Yugi goes on to use Obelisk against Marik in the tournament finals.

Obelisk makes sporadic appearances after the Battle City arc. It is used by Gurimo in season four of the anime, and takes part in the battle against the Leviathan. It is used to battle [[Ryo Bakura|Bakura]]'s ''Diabound'' in the final season; it defeats Diabound in the manga, while it is a draw in the anime against the power of the [[List of notable Yu-Gi-Oh! cards#Blue-Eyes White Dragon|Blue-Eyes White Dragon]] that Diabound had absorbed. In the manga, it is the only God card that Atem uses in his duel with Yugi (in the anime, he uses all three Gods).

Obelisk's attack and defense scores are 4000, and its effect allows a player to offer two monsters as sacrifices in order to destroy all the monsters on the foes field.''[[Yu-Gi-Oh!]]''. Episode #68. January 05, 2008.. When used by Seto Kaiba, Obelisk was used multiple times to achieve a victory in a single turn by this effect, as in the anime and manga a duelist only has four thousand life points at the start of the game. It is also shown that Obelisk is able to achieve an infinite attack strength for a single turn if two monsters are sacrificed as a tribute. in ''[[Yu-Gi-Oh! The Movie: Pyramid of Light]]'' Yugi Sacrificed Ra and Slifer to use this effect., and a single time in the canon series which was then explained as "a miracle of Obelisk's anger" and not confirmed as an actual effect.''[[Yu-Gi-Oh!]]''. Episode #141. January 05, 2008.

In the anime [[Yu-Gi-Oh! GX]] the most elite dorm is Obelisk Blue, despite [[The Winged Dragon of Ra]] being the most powerful. This could be because [[Seto Kaiba]] is the owner and founder of [[Duel Academy]].