Cthulhu

was originally devised by author, as an evil god from beyond the human universe. The creature remains a popular element of today.

While Cthulhu itself never made an appearance, a number of enemies and items in Terraria include direct and indirect references to Cthulhu.

Bosses

 * – One of the first bosses that will be faced by the player.
 * – The pre-Hardmode boss of The Crimson.
 * – The pre-Hardmode boss that guards the entrance to the Dungeon.
 * – The final boss in the game. It resembles common depictions of Cthulhu.
 * – The final boss in the game. It resembles common depictions of Cthulhu.

Bosses' servants

 * – A minion summoned by the Eye of Cthulhu.
 * – An invincible enemy summoned by Moon Lord.
 * – A minion summoned by the Lunatic Cultist. It resembles Cthulhu's head and is also reminiscent of the head of Moon Lord.

Items

 * – A post-Plantera yoyo dropped by Mothron during a Solar Eclipse, referencing the namesake boss.
 * – An Expert mode-exclusive item dropped by the Eye of Cthulhu.
 * – A quest item for the Angler. It resembles a Demon Eye.

Miscellaneous

 * – A larger version of the Sharknado summoned by Duke Fishron.

Trivia

 * In the concept art, he is missing one of his eyes, presumably because the missing eye became the Eye of Cthulhu boss.
 * One of the title messages on the refers to this: ""

克苏鲁