Makuta, after taking control of the universe, thought it would be a good idea to bring back the Bohrok swarms. However, since they all disappeared a long time ago, he tried to remember if there were any left. He realized that two of the Bohrok-Kal had not been destroyed during their encounter with the Toa Nuva underground. He created a Shadow Bohrok to search for them and bring them back. The Shadow Bohrok went underground and found Tahnok-Kal, still trapped by his own electricity, and freed him. Then the Shadow Bohrok went into space, and found Lehvak-Kal floating around there, and brought him back to Makuta. Makuta then gave both Bohrok-Kal somewhat different forms and powers.
About this creation
The three new Bohrok: Lehvak-Kal Reborn, Shadow Bohrok, and Tohnok-Kal Reborn.
The Shadow Bohrok created by Makuta. I know it looks like the eyes are blue, but they're really purple. And I'm sorry that the picture is sideways. (I rotated it when I uploaded it from my camera, So I have no idea what happened)
Lehvak-Kal reborn. His vacuum power has been increased by Makuta, and is also now very skilled in close combat with his two hook blades.
Tahnok-Kal reborn. Now has the ability to fly short distances due to his "jet packs" behind each of his shoulders. His power of electricity is increased, and can channel it through his twin blades at his enemies.