Elemental Titan Mode

 Elemental Titan Mode (Japanese: Σモード, S Mōdo, Eng. Translated: Sigma Mode, Korean: Σ 모드, S Modeu) is a combination of  Titan Mode  and Elemental Mode. This form  was unlocked by Bravenwolf in " Dojo Mojo ". He used it to defeat Guardian Boreas'   Mega Fusion. It was then unlocked by Valorn in " Toxic Toxsa " to defeat Guardian Zephyrus's Mega Fusion. Then it was unlocked by Lydendor in " Fight Knight " to defeat Guardian Notus's Mega Fusion. Finally, it was unlocked by Tributon in " Beware Betrayal " to save Bravenwolf from being defeated by Venetta. This mode can be activated by Bravenwolf Tenkai Firestorm, Tributon Tenkai Iceblast, Valorn Tenkai Terrablast, Lydendor Tenkai Lightningstrike, Dromus Tenkai Whirlwind, and Vilius Tenkai Dark Tempest. Only the Tenkai Knights and Vilius can use this mode.

Abilities
 Thi s mode gives them a combination of their Titan Mode   powers, including enhanced abilities, and Elemental Mode powers, including Elemental Attacks. This mode also grants the user full flight. The Tenkai Knights and Dromus have the ability to release their White Dragon Cubes to form the Light Tenkai Dragon, reverting them to their original form. Not only can Vilius release his Black Dragon Cube, but he can also summon the other four from the Guardians to form the Dark Tenkai Dragon.

Appearance
This mode is activated by the Knight changing into his bigger core brick, surrounded by his respective element. He then receives the normal attachments of Titan Mode, except in the respective new colors. They also get bigger wings and helmets. Their weapon grows bigger and can sometimes be shown surrounded by their element.

Bravenwolf Tenkai Firestorm Titan


Bravenwolf's elemental titan attack is called Tenkai Titan Firestorm

Tributon Tenkai Iceblast Titan
Tributon's elemental titan attack is called Tenkai Titan Iceblast

Valorn Tenkai Terrablast Titan
Valorn's elemental titan attack is called Tenkai Titan Terrablast

Lydendor Tenkai Lightningstrike Titan


Lydendor's elemental titan attack is called Tenkai Titan Lightningstrike 

Dromus Tenkai Whirlwind Titan
Dromus' elemental titan attack is called Tenkai Titan Whirlwind.

Vilius Tenkai Dark Tempest Titan
Vilius' elemental titan attack is called Tenkai Titan Dark Tempest.

Trivia

 * When this mode is unlocked by the Tenkai Knights, each knight is surrounded by an aura.
 * After each knight unlocks this mode, they can use it any time they like.
 * In the english dub, the knights always say a phase after the transformation, like: Yeah, I'm on FIRE! (Bravenwolf). Alright! Time to plug'n play! (Valorn). Yeeaah, Game on! (Lydendor). Oh yeah, so cool! (Tributon). Watch out! There's a storm coming! (Dromus). All being a reference to their element or their favourite hobbies.
 * Tributon was the only knight who didn't unlock Elemental Titan mode by fighting a Guardian. Instead, he unlocked Elemental Titan Mode by fighting Venetta.
 * Dromus was the only knight to unlock Elemental Titan Mode by trying to fight two Guardians.