As of version 2.0.6, CharacterModHelper will crash when function check_my_prototypes() is called too early:

Failed to load mods: __CharacterModHelper__/images.lua:148: This function must be called during data-final-fixes!
stack traceback:
    [C]: in function 'error'
    __CharacterModHelper__/images.lua:148: in function 'map_armors_to_char_anims'
    __CharacterModHelper__/data.lua:140: in function 'check_my_prototypes'
    __mimikyu-character__/data.lua:17: in main chunk

Mods to be disabled:
• mimikyu-character (0.1.0)

Please move the function call to data-final-fixes!