Chameleon

The Chameleon (カメレオン) is a clandestine Trigger that allows one to become temporarily invisible, consuming trion during use.

Appearance
Chameleon has no appearance as it turns the user completely invisible.

Background
While Kazama Unit was rising in rank, Chameleon was a new Trigger, and very popular amongst Border members. However, Kikuchihara's Side Effect rendered them useless, as well as allowed Kazama Unit to use Chameleon in their own way, which allowed them to ascend in ranking.

Abilities
The Trigger's main ability is invisibility, allowing the user to hide from their opponent. They can flee or attack in any situation. However, they cannot use any other Triggers while invisible, rendering them vulnerable to any attack.

Black Trigger Capture Arc
Kazama uses this to launch sneak attacks at Jin, though the latter's Side Effect makes it ineffective.

Border Enlistment Arc
Kazama uses Chameleon in his solo battle against Osamu. After being defeated by him over 20 times, Osamu discovers the Chameleon's weakness: it cannot be used in conjunction with other Triggers. With this information, Osamu fills the room with bullets, which forces Kazama to not use Chameleon to block against the bullets.

Large-Scale Invasion Arc
Kazama Unit uses this against Enedra, both during the initial and final fights.

B-Rank Rank Battles Arc
Sasamori uses Chameleon to sneak up on Yūma and hold him in place during the Round 2 battle. During the Galopoula Invasion, Kazama uses Chameleon to hide and defeat Ratarikov. The latter managed to deduce its mechanics, however. Wakamura and Miura also use Chameleon during the Round 5 Rank Battle to sneak to Katori's aid.