Replica

Replica (レプリカ) is Yūma Kuga's guardian and one of the five main characters of World Trigger. It is a self-described "multi-task Trion Warrior" created by Yūma's father, Yūgo Kuga.

Appearance
Replica resembles a rabbit head, and is black in color. It has two white slits for eyes and a thin purple line of light across his body resembling a mouth. It also has two appendices on the top of his body which resemble rabbit ears, and two other, foot-like appendices on the underside of his body, which seem to serve as a landing support, but were never seen in use, as Replica is always floating.

Personality
Being Yūma's guardian, Replica always provides advice for him, telling him what's right and wrong. However, it does not interfere in Yuma's direct decisions as it believes Yūma's choices are his own. It also assists him in battles, like when it prepares certain seals for Yūma and makes Yūma's attack more complicated.

Yūma Kuga
Replica is Yūma guardian, so it's very protective of him. It also frequently gives him advice and helps him in battles.

Osamu Mikumo
Like Yūma, Replica trusts Osamu. It serves as a link between the two of them, and like it does with Yūma, it frequently gives Osamu advice and sometimes helps him in battles.

Quotes

 * (To Osamu) "Nice to meet you, Osamu. My name is Replica, I am Yūma's guardian."
 * (To Yūma, on multiple occasions) "I cannot make that decision. Only you can."
 * (About Kōda Unit) "They seem pretty stupid, so it's possible they're being manipulated."

Trivia

 * His voice actor, Hideyuki Tanaka, also voices Yūgo Kuga and the Narrator.
 * This trait wasn't kept in the Primo TV dub, where Replica is voiced by Marco Soriano and the narrator by Michael Dobson.
 * The model for his creation was Ashihara's rice cooker.
 * Viza referred to Replica as a Tropoi autonomous Trion Warrior. It is unknown what Viza meant, but "Tropoi" (Τρόποι, Trópoi) means "decorum" in Greek. According to Border Briefing File, it may or may not be a Neighbor country.