Just released the new versions of 19 and 20.
For some reason, I decided on trying soemthing new:
They can not transform, nor use U+K to power up.
They will power up when engaging in melee.
They will drain the enemies powerlevel.
And when they do whats usually powering up, they will transfer powerlevel into health and energy.
All in all, they are really close to the source.
Share and enjoy :D