Koala Kong

Koala Kong is a strong, mutated koala created by Dr. Neo Cortex. He first appears in Crash Bandicoot game.

Crash Bandicoot
In Crash Bandicoot, Koala Kong is the third boss, and is fought at the end of the Middle Island. During his boss battle, Koala Kong tosses around boulders using his superhuman strength.

In the epilogue, Koala Kong moved to Hollywood and landed a motion picture deal with Universal Proportions, working with a speech therapist to improve his diction.

Crash Bash
In Crash Bash, Koala Kong is a playable character, and is part of Dr. Neo Cortex's team. His stats are the equivalent to Tiny Tiger on the opposing team.

Crash Twinsanity
In Crash Twinsanity, Koala Kong makes a cameo appearance during Crash's fake 'birthday party'.

Crash Team Racing Nitro-Fueled
In Crash Team Racing Nitro-Fueled, Koala Kong is a playable character.

Trivia

 * Koala Kong was originally planned to appear as a boss in Crash Twinsanity.