This Security robot is activated by Placido, as a measure to prevent that Yusei Fudo could get back his engine program and, later, as a method of keeping him inside until the countdown for the explosion of the warehouse they were in reached 0.
While Yusei is questioning Lazar about where the program is, the robot appears before them. It then scans and identifies Yusei, and then proceeds to close down all of the exits. The security robot then claims that he must defeat it in a duel, if they wish to proceed.
Yusei accepts, and as the duels begins, he's quickly put into a tight spot, as the Guard Robot analyzes and counters every move he makes. Ironically, it even predicts Yusei's winning move, in which he Synchro Summons Stardust Dragon, but it cannot do anything to stop it.