After picking up a Monster Signal from the Rainbow Bridge, Ren and his friends rush there with President Madarame. When they arrive, they see the bridge enveloped in a flickering heat haze. 
In the midst of it, the guardian of the new energy point, Marici, appears.
Those clones are essentially made of haze.
Diese Doppelgänger sind
sozusagen das Hitzeflimmern.
Esas copias son como espejismos.
Esas copias son como espejismos.
Ces ennemis sont des mirages.
Quei cloni sono distorsioni 
ottiche dovute al calore.
Esses clones são feitos essencialmente
 do calor tremeluzente.