March of the Micro Bears is the 24th episode in the Japanese order of the 2003 series, and 29th episode in the English order.

Shadow upgraded a childhood toy of Dr. Tenma's to put the citizens under a spell and help Astro "evolve".


Info coming soon...


  • Astro Boy
  • Zoran
  • Kennedy
  • Abercrombie
  • Alejo
  • Shadow
  • Dr. Tenma
  • Dr. O'Shay.
  • Yuko
  • Micro Bears
  • Giant Micro Bear