The Test Bots first appear when Vox demonstrates to Ratchet the features of the Deadlock collar that all competing heroes wear. With one touch of a button on Vox's remote, the first Test Bot is electrocuted. With the second press, the collar detonates and blows the head off the second Test Bot. Later, one of the Test Bots appears on Vox's monitor to discuss the recent sales figures for Ace Hardlight merchandise. Much to Vox's anger, nothing is selling except for[Fuzzy Lombax Ears, and he tells the Test Bot to set up a focus test before reporting to B-Level for disintegration.