Medical patches served as a form of therapeutic technology designed to alleviate pain. The renegade clone Wrecker resorted to these patches to manage the persistent headaches he experienced during the early years of the Imperial Era. Neither he nor his squad realized that these headaches stemmed from the aggravation of his implanted inhibitor chip due to repeated head trauma. This chip, a mind-altering mechanism, was present in all clones to enforce compliance with Order 66. Following the Bad Batch's reunion with Captain Rex, a fellow renegade clone and ally, Wrecker's request for a patch from Tech revealed their depleted supply. This prompted Rex's concern upon learning that the Bad Batch had yet to extract their chips.