Robot Beast Bracus was the 46th Monster by order of appearance (showing up on Screen before Redos by a few seconds) and was one of three Monsters to show up in Ep.41 of the Jeeg TV series (the third been Phantom Daiga). One half of the Robot Brothers, Bracus was a humanoid Type Beast, with Dark and Bright Green/Blue colors, with parts of its torso, Pelvis, Arms and Feet been black; head, hands and upper legs were gray, with the fore arms been dark and bright yellow; the body was covered in warts. He posses a single curved horn, which like Redos, fired the Plasma discharge, and had a spike maze attached to a blade via a cable.

While having weapons, Bracus main mode of fight is similar to his brother; fast hit and run strikes of two fast moving objects, and bring the opponent down with a Plasma discharge fired from the Horns of the Brothers.

Both Bracus and Redos came on top as the Monsters of choice would be used for the next operation having defeated with their Fast Hit and Run and Plasma attacks on Daiga, the Phantom Army's choice – dealing another humiliating blow to Ikima and Amaso. Meanwhile, Mayumi had adopted a Puppy (named Shiro), much to Hiroshi's dismay, as taking care of an animal is great responsibility (while she is dealing with a cold); later his concerns were realized when Shiro goes missing and reprimands Mayumi, going to the point of slapping her (Douche) and she sets out in the rain searching for Shiro, finding in a construction site; but, due to her cold and the rainy weather, Mayumi falls heavily ill, Hiroshi finding her with Shiro, as well a surprise kill squad of Robot Soldiers, which he disposes quick, then taking Mayumi to a Hospital, where her condition is diagnose as acute Pneumonia. With everyone gathered, Pancho blames himself, as he ask her to lend the dog.

But as this situation unfolds, the Robot Brothers arrive on the grounds of the Build Base and begin to attack the Lab with their very destructive Plasma Beams, causing great damage and taking down the defenses. Computer Father calls Hiroshi, but the latter refuses to leave his sister behind, though Kikue convinces her son that she would keep an eye on her, though he leaves his Jeeg Pendant to Mayumi as an amulet – while Miwa launches the Big Shooter.

Hiroshi transforms into the Jeeg Head, but the two Beasts fire Plasma at it and the Shooter Missile, trying to stop the Build Up; MechaDon2 shows up to help (in one of the rare occasions Pancho is piloting it, with Don as Co-Pilot) and though the Brothers dispose of it, the distraction helps Jeeg getting Build Up.

Still, Jeeg was out maneuver through the whole fight; every time he tried to take down one the other would block the attacks or sneak behind him. Eventually, the Robot Brothers begin to make their signature move, running at high speed around Jeeg and firing the Plasma energy; the feedback busted all of Jeeg's systems, with weapon rendered useless and the robot falling apart. Miwa reminds him of his sister, who is fighting for her life, and Hiroshi, inspired by this, releases a full Magnetic Power Blast, tossing the Brothers and Rebuild itself for Round two.

The second fight, the Brothers due the same tactic, but Jeeg spins opposite to theirs, blocking the feedback, and with a Magnetic pulse attracts Redos, though Jeeg is block by Bracus. Realizing this can't go on, Hiroshi calls for Earth Parts while hitting the Brothers with Dynamite Punch, allowing him to Build Up Earth-mode Jeeg; Jeeg takes distance from them to dig his way underground and comes out in front of Redos, Ramming through the Beast, disposing of it. With one down, Jeeg now concentrates on Bracus, which is disposed with Driller Missiles quickly. A flabbergasted Flora can only recoil as she can not defeat Jeeg, who bounce from defeat by Bounds of Love, which are stronger than her Robot Beasts (This is a follow up from Flora's character reveal and development in Ep.36).

Later at the Hospital, Mayumi fully recovered, decides to give the Dog to a friend of Chibi and to be more responsible with a pet when older.