Breo

Breo is a member of Team Unicorn, along with Andore and Jean. He is generally a laid-back person, but he becomes more energetic and lively when he duels.

Series Prior
Breo was a street duelist before he joined Team Unicorn. His personality was much more self-centered and boastful during this time. He apparently had an impressive winning streek and believed himself to be the best. One day, when he arrived at where he usually practiced, he found Andore and Jean tuning up a Duel Runner. When they refused to leave, he challenged them to a duel. After losing to Jean, he is invited to form a team with Andore and Jean. During all the tournaments that follow, he's never had to duel until the WRGP, since Andore has been able to handle it all on his own.

Before WRGP
Breo is at the opening cermonies for the WRGP along with his teammates. They all introduce themselves to Team 5D's.

Breo is practicing with the rest of Team Unicorn when Crow crashes into him. He watches Andore's duel with Yusei afterwards.

WRGP
Breo is the "Second Wheeler," or second duelist, on Team Unicorn's line up during the WRGP. He takes over the duel after Andore sacrifices the last of his life points to damage Yusei. He proves to be an incredibly powerful opponent early on, wielding a Mill deck that leaves only 4 cards in Yusei's deck by the time Jean takes over.

Deck
Breo uses a Beast Bicorn Deck. Rather than deal Life Point damage, which is what he would have done before joining Team Unicorn, he instead focuses entirely on Deck Destruction. He maintains card advantage with Mine Mole, while using Bicorn Re'em and Voltic Bicorn as powerful monsters to make his opponent lose most of his Deck. As his playing style was to help out Jean, the huge risk he takes with effects that mill both players is omitted. Breo has a myriad of Trap Cards to incapacitate and mill his opponents.