The series first aired on December 26, 2005, as a sneak peek during Cartoon Network's "Sneak Peek Week" block, airing alongside fellow Cartoon Network original series Ben 10, Cartoon Network European co-production Robotboy, and acquired Canadian  YTV series Zixx.
ðə sˈɪɹiz fˈɜːst ˈɛɹd ˌɔn dᵻsˈɛmbɚ twˈɛnti sˈɪks, tˈuː θˈaʊzənd fˈaɪv, æz ɐ snˈiːk pˈiːk dˈʊɹɹɪŋ kɑːɹtˈuːn nˈɛtwɜːks "snˈiːk pˈiːk wˈiːk" blˈɑːk, ˈɛɹɪŋ ɐlˈɔŋsaɪd fˈɛloʊ kɑːɹtˈuːn nˈɛtwɜːk ɚɹˈɪdʒɪnəl sˈɪɹiz bˈɛn tˈɛn, kɑːɹtˈuːn nˈɛtwɜːk jˌʊɹɹəpˈiən kˈoʊpɹədˈʌkʃən ɹˈoʊbətbˌɔɪ, ænd ɐkwˈaɪɚd kɐnˈeɪdiən wˌaɪtˌiːvˈiː sˈɪɹiz zˈɪks.