Crest

The crest (紋章 Monshō)    refers to the symbol which members of the Vetrix Family have on their body  originated from the Barian World. According to Yu-Gi-Oh! ZEXAL, there are four of them containing special abilities.

Appearance
A Crest appears on the owner's respective body part and seems to be based off of different things. For instance, Trey's crest resembles a flower, Quattro's crest resembles fire or lightning, Quinton's crest resembles a staff or water, and Vetrix's crest resembles an eye. As seen in the anime, They come in various coloration on owner's body; Trey's crest is green and on his left hand, Quattro's crest is purple and on his right hand, Quinton's crest is blue and on his forehead, and Vetrix's crest is pink and on his right hand. When the crests light up, they make a similar noise to the Marks of the Dragon in Yu-Gi-Oh! 5D's. The aspects of the crests are also identical to the colors of Team Ragnaroks' Rune Eyes in ''Yu-Gi-Oh! 5D's''.

===crest

History
After being betrayed by Dr. Faker, Bryon Arclight (who eventually became known as Vetrix) was trapped in the Barian World. While wandering through the alternate dimension, he nearly gave up hope many times but was rescued by a group of Barians and granted the abilities of the Barian World. His saviors requested he collect the "Numbers" and destroy the Astral World as compensation for their altruism. These abilities include the "Crests" which allowed him teleport, steal a persons power, and control a person. He used his "Crest" to return to Earth, but his form was warped into that of a child. He granted each of his sons a crest which gave them various abilities, but they were directly tied to their souls giving them a signal that they should not lose a Duel while wielding a powerful Number, their souls will be exhausted and they will rendered comatose.