F1 Killer

Chaos/F1 Killer is a coding method that refers to characters who can kill F1. This method much like the OTHK method is very complex and comes in many forms, the most common form is having the screen spammed with invisable hitdef helpers in which capture the enemy helpers and custom state them, depending on how the projectile coding is coded. It will create a projectile which only effects the root (what created the helper) and can be used to send the character into its own kill state.

One example of a character who uses this method isKiller Colonel, his 12th palette uses this method to capture the helpers and force them into a custom state.