Bleach Episode 146: Her Name is Nel! The Appearance of the Strange Arrancar
Episode 146 of 366 of Bleach, aired October 31, 2007, 24 minutes. Available with English subtitles and dub where released.
Episode summary
Ichigo and the others intervene to save a little girl from 3 Hollows only to find that she is really an Arrancar named Nell. After a short episode, they are interrupted by the appearance of a Guardian who blocks their path to the castle. The guardian seems invulnerable to all their attacks until they get a helping hand from some friends