Pocket Withers

A datapack that adds a recipe for the wither spawn egg and make the bedrock edition wither the default wither. (Default wither can be changed by changing the settings which can be accessed by using /reload) The bedrock edition wither has a unique spawn and death animation. At the beginning of the second phase the wither will spawn wither skeletons and do a smash attack and for the rest of the second phase it will dash towards its target!

How to spawn each wither If It is not the default wither?

Bedrock Edition Wither:
Spawn a wither on top of bedrock

Java Edition Wither:
Spawn a wither on top of a cocoa plant