The Crimson Prankster is a minor antagonist in the video game Kingdom Hearts 358/2 Days. It is an Emblem Heartless that resides in Wonderland.
Roxas was assigned a mission to go to Wonderland and exterminate a mysterious Heartless. Upon arrival, he drinks a potion on the table of the Bizarre Room and as a result, shrinks down to the size of an ant. Shortly after drinking the potion, the Crimson Prankster appears from out of the shadows and attacks Roxas. It has power over fire and the ability to create a duplicate of itself. After a long battle, Roxas was able to defeat both the Crimson Prankster and its replica. The heart it held captive was released, and Roxas's mission was completed.
- The Crimson Prankster bears a strong resemblance towards the fellow Elblem Heartless known as the Trickmaster.
- Ironically, both of them showed up in Wonderland, and they attack the main protagonist when they were tiny.
- In Kingdom Hearts Final Mix, the Trickmaster ends up having the same color sceme as the Crimson Prankster.