Aku Aku

Aku Aku is an acient spirit who lives within a mask and helps Crash Bandicoot defeat forces of evil.

Story
Aku Aku was first seen in Crash Bandicoot (game) as a mask that guided Crash from danger.
 * Crash Bandicoot

In Crash Bandicoot 2: Cortex Strikes Back he played the same role as he did in the first game.
 * Crash Bandicoot 2: Cortex Strikes Back

Then in Crash Bandicoot: Warped he began to play more of a role in the game series as he speaks to Crash and Coco about Uka Uka, and helps them along as they complete their mission to defeat Uka Uka and his henchmen.
 * Crash Bandicoot: Warped

After that he was in Crash Team Racing giving Crash, Polar, Pura, and Coco helpful tips as they raced in a contest to save earth from Nitros Oxide.
 * Crash Team Racing

In Crash Bash he gathered Crash and Coco, and forced Dingodile and Tiny Tiger to fight for good in a contest created by him and Uka Uka that was suppose to end their conflict.
 * Crash Bash

Then he appeared in Crash Bandicoot: The Wrath of Cortex helping Crash and Coco defeat Uka Uka and The Elementals.
 * Crash Bandicoot: The Wrath of Cortex

Later appeared in Crash Bandicoot: The Huge Adventure helping Crash defeat Dr. Neo Cortex.
 * Crash Bandicoot: The Huge Adventure

Then in Crash Bandicoot: N.Tranced he helped Crash find a way to get to N.Tropy's base and ruin N.Trance's and N.Tropy's plan.
 * Crash Bandicoot: N.Tranced

After that he appeared in Crash Nitro Kart with basically the same role as he had in Crash Team Racing except he and the Bandicoot's were up against Emperor Velo the 27th this time.
 * Crash Nitro Kart

In Crash Bandicoot: Purple he helped Crash and Spyro defeat Ripto, Dr. Neo Cortex, and their forces of evil.
 * Crash Bandicoot: Purple

Then in Crash Twinsanity he guided Crash through his journey and teamed up with Uka Uka in an unsuccessful effort to defeat The Evil Twins. Last he appeared in Crash of the Titans helping Crash save the Bandicoot's island from Uka Uka, Nina, Dr. Neo Cortex, and their monsters.
 * Crash Twinsanity
 * Crash of the Titans

Personality
Aku Aku is a happy, good hearted, and peaceful being but at the same time he knows when to take important matters (like saving the world) seriously.

Appearances

 * Crash Bandicoot
 * Crash Bandicoot 2: Cortex Strikes Back
 * Crash Bandicoot: Warped
 * Crash Team Racing
 * Crash Bandicoot: The Wrath of Cortex
 * Crash Bandicoot: The Huge Adventure
 * Crash Bandicoot: N.Tranced
 * Crash Nitro Kart
 * Crash Bandicoot: Purple
 * Crash Twinsanity
 * Crash Tag Team Racing (cameo)
 * Crash Boom Bang!
 * Crash Of The Titans