Rafflesia

Rafflesia ("Rafureshia" ラフレシア) is an episode of the 1963 Astro Boy anime series.

Synopsis
Rafflesia, the largest flower on earth, is found to be a plant man from outer space. This flower, which needs radioactivity to survive, is stronger than it looks, and even Astro is no match for it.

Characters
In Order of Appearance: